ET, a Falcon 9 rocket vaulted off pad 39A at Kennedy Space Center with NASA's SpaceX Crew-6 mission, the seventh flight under contract between the agency and California-based company. The quantity of fentanyl seized by Customs and Border Protection agents along the U.S.-Mexico border has increased from 2,633 pounds in fiscal year 2019 to 10,586 pounds two years later, and to 14,104 pounds in FY 2022. When NIRCam reaches 120 kelvins (approximately -244 degrees Fahrenheit, or -153 degrees Celsius), Webbs optics team will be ready to begin meticulously moving the 18 primary mirror segments to form a single mirror surface. Webb is an international program led by NASA with its partners, ESA (European Space Agency)and theCanadian Space Agency. They will spend six months on the International Space Station. Thomas Valdez tells how his early penchant for tinkering with things followed a path that led him to a career as a research engineer. The Sun as seen in multiple wavelengths of light by NASA's Solar Dynamics Observatory over four days in August 2018. fullHeightWidthIframe() BREVARD, Fla. An international crew of three astronauts and a cosmonaut launched from Kennedy Space Center early Thursday, kicking off a roughly six-month science mission to the International Space Station. The average distance between Earth and the moon is about 239,000 . This is the last of the major deployments on the observatory, and its completion will set the stage for the remaining five and a half months of commissioning, which consist of settling into stable operating temperature, aligning the mirrors, and calibrating the science instruments. var w = window.innerWidth function toggleFullscreenMessage(){ Europa is my favorite Itis that it is one of the veryfew places in our solar systemthat could potentiallyhave life. EarthSky 2022 lunar calendars now available! Similar to your arm giving the ball energy to go up a few meters from the Earths surface, the Ariane 5 rocket gave Webb energy to go the great distance of 1.1 million kilometers, but not quite enough energy to escape Earths gravity. Dr. Nicola Fox will serve as the associate administrator for the agencys Science Mission Directorate. The fine steering mirror is critical to the process of image stabilization. If the Ariane had given Webb even a little bit too much energy than needed to get it to L2, it would be going too fast when it got there and would overshoot its desired science orbit. Toss a note in a bottle and hope that it helps NASA astronauts Stephen Bowen and Warren Hoburg, the United Arab Emirates' Sultan Alneyadi, and Russian cosmonaut Andrey Fedyaev will launch in a . $('body').css('overflow','') #CometLeonard pic.twitter.com/ocU42M65wC, Space Physics ?? The giant planet stands alone, low in the western sky after sunset in February. Were one step closer to uncovering the mysteries of the universe. Because it is an ideal location for an infrared observatory. Venus is the brightest of all the planets in our solar system because of the highly reflective clouds that completely cover its globe. Older people walking less than 2,000 steps a day at higher risk of heart attack, Hubble Space Telescope took on your birthday. This still from a movie shows an image taken by NASA's Dawn spacecraft layered on a digital terrain model of an unusual hill containing a dark-rayed impact crater and nearby dark deposit on asteroi Venus may be losing heat from geologic activity in regions called coronae, possibly like early tectonic activity on Earth. Arranged by moonth, Your email address will only be used for EarthSky content. This artist's concept shows "tides" on Titan raised by Saturn's gravity, as detected by NASA's Cassini spacecraft. At 110 feet in height, Terran 1 is about half the height of SpaceX's Falcon 9 and United Launch Alliance's Atlas V. But Relativity says the rocket is mostly 3D printed 85% by mass. The deployments could not have gone more perfectly. the South Celestial Pole is somewhere near the middle though, What's Up for February? Webbs orbit will allow it a wide view of the cosmos at any given moment, as well as the opportunity for its telescope optics and scientific instruments to get cold enough to function and perform optimal science. You'd have to go back four years, to March of 2018, to find twilight skies with no bright planets. It will make its closest approach to the sun, or perihelion, on Jan. 12, and will then whip past Earth. The timeline will be updated as major deployments resume. The Seven Sisters meet the evening star, Mars continues its getaway, and unpacking the Moon illusion. That deployment is still expected to take place over at least two days. Thus, those big 12.5-millimeter moves for each segment are split up into many, many short moves that happen one actuator at a time. We heard on December 15, and again around December 19-20, that the comet had brightened more than expected. (But they can appear anywhere in the sky!) The dashboard displays the next five Earth approaches to within 4.6 million miles (7.5 million kilometers or 19.5 times the distance to the moon); an object larger than about 150 meters that can approach the Earth to within this distance is termed a potentially hazardous object. but where exactly is it? Embed this resource by pasting the following code into your website: Managing Editor: By the way, astronomer Greg Leonard discovered this comet as 2021 began, giving it its name. $(window).resize(function(){ This will likely affect the full timeline for Webb's deployment. The big news for Webb this week was the final insertion into orbit around the second Lagrange point. Moore Boeck. } NASA / 3 - Charon, NASA's Dawn Spacecraft Flight Over Occator Crater, Venus' Squishy' Outer Shell May Be Resurfacing the Planet, NASA Administrator Selects New Head of Science, Poem by U.S. Note that it is simpler, easier, and more efficient to orbit around L2 than to dwell precisely at L2. Authors & editors: Phil Davis Then share the results with your friends on social media using #Hubble30. Science news, great photos, sky alerts. NASA Web 2022 January 22: The Full Moon and the Dancer 2022 January 21: Young Star Jet MHO 2147 2022 January 20: NGC 7822 in Cepheus 2022 January 19: M31: The Andromeda Galaxy 2022 January 18: From Orion to the Southern Cross 2022 January 17: Chamaeleon Dark Nebulas 2022 January 16: A Retreating Thunderstorm at Sunset 2022 January 15: Galileo's Europa Scientists have completed the longest-ever study tracking temperatures in Jupiters upper atmosphere where its signature colorful striped clouds form. Contact Emre Kelly at aekelly@floridatoday.com. Taken with the same camera and lens the stripes are from Full Moon L1, L2, and L3 are meta-stable locations with saddle-shaped gravity gradients, like a point on the middle of a ridgeline between two slightly higher peaks wherein it is the low, stable point between the two peaks, but it is still a high, unstable point relative to the valleys on either side of the ridge. The six Apollo landing sites are revealed chronologically as the phase and libration of the Moon is shown throughout the Apollo era. The source of the Quadrantids is thought to be the asteroid 2003 EH1, which might actually be an extinct comet. A service of: "Once more unto the breach, dear friends," mission commander Bowen, quoting Shakespeare's "Henry V," said just before liftoff. Researchers have explored this imprint back t Credit: NASA's Goddard Space Flight Center. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. What did Hubble look at on your birthday? The average distance between Earth and the moon is about 239,000 miles (385,000 kilometers). My name is Mana. The Webb mission operations team has given the go-ahead to move forward with the extension of its starboard primary mirror panel. The mirror deployment team incrementally moved all 132 actuators located on the back of the primary mirror segments and secondary mirror. setTimeout(function(){ The timeline will . if($full.length > 0){ Authors & editors: And because L2 is a location of gravitational equilibrium, it is easy for Webb to maintain an orbit there. For insight on what to expect in the months ahead and how to follow along, we hear from Alexandra Lockwood, project scientist for Webb science communications at the Space Telescope Science Institute: Words cant describe the pride and excitement the Webb team is feeling right now. Eta Carinae and the reddish glow of the Great Carina Nebula shine along Specific rights apply. January 21, 2022. On Sept.25, 2135, an asteroid called Bennu will make a close flyby of Earth. A stunning image . The fact that it looked simple is a tribute to all those over the years who have worked towards Webb mission success. window.addEventListener("message", receiveMessage, false) I'm Preston Dyches from NASA's Jet Propulsion Laboratory, and that's What's Up for this month. Last week, the Webb team began moving the observatorys individual mirror segments out of their launch positions. }) That's what's up this week @NASA . They make great gifts. The solar-powered lander has run out of energy after more than four years of science on the Red Planet. So pour me another, its good for my health By that we mean that this comet takes tens of thousands of years to complete an orbit around the sun. Big water news from Saturn's tiny moon Enceladus. heads the Southern Cross near top Credit: NASA. U. NASA Web What did NASA see on my birthday Our universe is a fascinating place filled with stars and mysterious elements. Mathematically, Lagrange points are solutions to what is called the restricted three-body problem. Any two massive, gravitationally significant objects in space generate five specific locations Lagrange points where their gravitational forces and the centrifugal force of the motion of a small, third body such as a spacecraft are in equilibrium. By Thaddeus Cesari, Webb science writer, NASAs Goddard Space Flight Center, Greenbelt, Md. GSFC January begins with a new moon on the 2nd. Hubble takes pictures 24 hours a day, seven days a week so its built up an amazing cache of stunning imagery with Nasa celebrating its 30th anniversary in 2020 by releasing 365 days worth of pictures. During the days that were slowly deploying the mirrors, those mirrors are also continuing to slowly cool off as they radiate heat away into the cold of space. // console.log("received message", event) Before launch, the mirrors were all positioned with the pegs held snug in the sockets, providing extra support. $('.webgl_module_container iframe').css({'height': "", 'width': '1px', 'max-width': '100%', 'min-width': '100%'}) Joining the pair in the southeastern sky will be Venus. Monday, January 10, 2022. Credit: NASA/JPL-Caltech/Michael Benson ( https://buff.ly/3r0unsJ) Europa and the Great Red Spot. streching about 60 degrees across deep southern skies The solar-powered lander has run out of energy after more than four years of science on the Red Planet. Webb, welcome home! said NASA Administrator Bill Nelson. The team chose a bright star (magnitude 6.7 at a distance of about 260 light-years, as measured by Gaia). New year, new Moon; midnight meteors; and Mars rises. Simply enter your month and date of birth when prompted, and . Poet Laureate Ada Limn is crafting a new poem dedicated to NASAs Europa Clipper mission. Bottom line: Comet Leonard (C/2021 A1) discovered on January 3, 2021 is heading inward toward its January 3, 2022, perihelion. In fact, Webbs orbit around L2 is larger in size than the Moons orbit around Earth! The dashboard displays the date of closest approach, approximate object diameter, relative size and distance from Earth for each encounter. Your California Privacy Rights/Privacy Policy. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named 3505 Byrd in her honor. var $full = $('.webgl_module_container.full'); Privacy Policy and Important Notices The extension of Earth's axis of rotation to the south, it's The James Webb Space Telescope is the worlds largest, most powerful, and most complex space science telescope ever built. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says. A service of: The primary mirror segments were driven 12.5 millimeters away from the telescope structure. This tends to be one of the better meteor showers of the year, and often produces a number of bright meteors called fireballs. Webb has used as little propellant as possible for course corrections while it travels out to the realm of L2, to leave as much remaining propellant as possible for Webbs ordinary operations over its lifetime: station-keeping (small adjustments to keep Webb in its desired orbit) and momentum unloading (to counteract the effects of solar radiation pressure on the huge sunshield). Comets are typically brightest around perihelion, and the comet has been brightening and is still getting brighter. In what will be SpaceX's third flight of 2022, the company is set to loft 49 Starlink satellites into space on a Falcon 9 rocket from NASA's Launch Complex 39A at the Kennedy Space Center in. Slow and steady does it, for all these gradual processes that get us every day a little bit closer to our ultimate goal of mirror alignment., Marshall Perrin, deputy telescope scientist, Space Telescope Science Institute. Specific rights apply. the galactic plane near the right edge. Hvis du ikke nsker, at vi og vores partnere skal bruge cookies og personlige data til disse andre forml, skal du klikke p Afvis alle. Now that the action-packed deployment sequence is over, we are moving into a much slower, yet deliberate, phase of the commissioning process. Learn more. Comet Leonard will round the sun at perihelion on January 3, 2022, at a distance of about 56 million miles (0.6 AU, or 90 million km). }, 300) Contact Jamie Groh at JGroh@floridatoday.com. The history-making Viking 1 mission launched 35 years ago. From engineers to scientists to IT staff to graphic designers to administrative personnel (and more! January begins with a new moon on the 2nd. (Imagine Webb holding its mirrors tucked up close to its telescope structure, keeping them extra safe during the vibrations and accelerations of launch.) And we dont do them all at once. $('body').css('overflow','hidden') Despite its high speed, youll find that its distance from Earth and the vast distances in our solar system will cause the comet to appear as a very slow-moving object. So start off your new year by catching a few shooting stars after midnight on January 3rd. Moore Boeck. Published: February 1, 2022. New year, new Moon; midnight meteors; and Mars rises. Finally, our ops team and ground system have done a fantastic job of executing the commissioning timeline, and all those rehearsals have paid off. } Thank you! }, 300) And that means the first week of the month is ideal for stargazing because the few days before and . With major deployments complete, Webb continues its journey to its final halo orbit around L2. This week, we have started the process of moving the mirror segments (all primary plus secondary) out of their stowed launch positions. The Asteroid Watch dashboard tracks asteroids and comets that will make relatively close approaches to Earth. Embed this resource by pasting the following code into your website: Managing Editor: Furthermore, to limit the amount of heat put into Webbs very cold mirrors from the actuator motors, each actuator can only be operated for a short period at a time. Scripts sent from the Mission Operations Center will direct this process under human supervision, slowly and steadily moving one actuator at a time, taking turns between segments. You can find out what image of space Nasa took on your birthday at the Nasa website, with a section dedicated to the Hubble's photos. SpaceX and NASA have called off an astronaut launch to the International Space Station after an issue with the rocket's ground system was detected. This animation shows a color-coded map from NASA's Dawn mission revealing the highs and lows of topography on the surface of dwarf planet Ceres. On January 5th, look to the southwest after sunset to find the crescent Moon in a close pairing with brilliant Jupiter. Every Full Moon of 2021 shines in this year-spanning astrophoto project, Comet C/2021 A1 (Leonard) 2021s best and brightest comet is now in the evening sky for Northern Hemisphere observers. U. NASA Web It's an absolute miracle of engineering and I just feel so lucky that I get to fly on this amazing machine," he said. NationalAeronautics and SpaceAdministration, Following Webbs Arrival at L2, Telescope Commissioning Set to Begin, The Webb Team Looks Back on Successful Deployments, Orbital Insertion Burn a Success, Webb Arrives at L2, the second Sun-Earth Lagrange point, or L2, access nearly half the sky at any given moment, moving the observatorys individual mirror segments, Webb Begins Its Months-Long Mirror Alignment, Following the Next Steps in Webbs Journey, Primary Mirror Wings Deployed, All Major Deployments Complete, Starboard Primary Mirror Wing Deployment Underway, Webb Observes a Globular Cluster Sparkling with Separate Stars, Breaking the Tracking Speed Limit With Webb, Webb Spies Chariklo Ring System With High-Precision Technique, Near Infrared Imager and Slitless Spectrograph Operations Update. While all Lagrange points are gravitational balance points, not all are completely stable. The cryocooler will cool MIRI to 6 kelvins in the following months. This enables them to get cold for infrared sensitivity, yet still access nearly half the sky at any given moment for observations. Live coverage of the deployment, from the Webb Mission Operations Center at the Space Telescope Science Institute in Baltimore, will stream on nasa.gov/live starting no earlier than 9 a.m. EST. It will be the first object NIRCam sees when photons of light hit the instruments powered-on detectors. TEA-TEB ignites on contact with air, allowing the Merlin engines to fire and produce up to 1.7 million pounds of thrust. That is the first star Webb will point at to gather engineering data to start the mirror alignment process. Webb mission management decided this morning to pause deployment activities for today and allow the team to rest and prepare to begin Webb's sunshield tensioning tomorrow, Sunday, Jan. 2. Order now. NASA and SpaceX previously tried to launch Crew-6 on Monday, Feb. 27, but an issue with the system that ignites the Falcon 9 rocket's Merlin main engines forced teams to stand down and troubleshoot. if(event.data == "toggle_fullscreen"){ #Comet Leonard C/2021 A1 May and November Social Media Lead: Clicking on the encounter date will display a Web page with details about that object. You should note that you cannot search for a specific year, with a photo from a random year shown for each date. At the bottom are the Large and Small Magellanic clouds, And I know these stories were sailed way before me the year progresses in stripes beginning at the top. NASA / The sample was originally collected by the rover on Dec. 29, 2021, from a . Bill Dunford } Each day a different image or photograph of our fascinating universe is And a December 25 birthday will give you a shot of another dwarf galaxy, NGC 4214, featuring intricate patterns of glowing hydrogen an image which the Hubble snapped back in 2009. As the instruments meet pre-defined criteria for overall temperatures, the team is shutting off these heaters to allow the instruments to restart the months-long process of cooling to final temperatures. The team also turned on the High-Gain Antenna, enabling downlink to Earth through the Deep Space Network using the Ka radio band. L2 is also convenient for always maintaining contact with the Mission Operations Center on Earth through the Deep Space Network. What's Up for January? Engineers first commanded actuators 126 devices that will move and shape the primary mirror segments, and six devices that will position the secondary mirror to verify that all are working as expected after launch. (MTU) & This image taken by the Mastcam-Z camera aboard NASA's Perseverance Mars rover on Jan. 20, 2022, shows that the rover successfully expelled the remaining large fragments of cored rock from a sample tube held in the drill at the end of its robotic arm. The calendar month, lunar phase. is easy to spot in star trail images of the southern sky. The Artemis missions will build a community on the Moon, driving a new lunar economy and inspiring a new generation. This will likely affect the full timeline for Webbs deployment. But for now, it is the perfect target to begin our search for photons, a search that will lead us to the distant universe. On Monday, Jan. 24, engineers plan to instruct NASAs James Webb Space Telescope to complete a final correction burn that will place it into its desired orbit, nearly 1 million miles away from the Earth at what is called the second Sun-Earth Lagrange point, or L2 for short. An amazing feature of this celestial visitor is that its an ultrafast comet. But, despite its incredible speed through the vast space of our solar system, dont expect to see this comet swoosh across the sky. We are now on the verge of aligning the mirrors, instrument activation and commissioning, and the start of wondrous and astonishing discoveries.. For example, searching for January 1 will bring up an image of Galaxy Leo IV one of a dozen dwarf galaxies near the Milky Way which was taken in 2012. flanked by bright galaxies and southern celestial gems. Following Webb's arrival at its orbital destination around Lagrange Point 2 (L2) on Jan. 24, the mission operations team began working its way through a critical series of steps: powering on all the science instruments, turning off heaters to begin a long cooldown process, and ultimately capturing the first photons on Webb's primary camera to enable a months-long alignment of the telescope. Next up: HD 84406! NASA by Caltech. } else { fullHeightWidthIframe() Closest approach to Venus was at 9:08 p.m. This blog will be updated weekly, and sometimes more often. The star is a sun-like G star in the Ursa Major constellation, which can be seen by Webb at this time of the year. February is a perfect time to enjoy one of the most popular and well-studied sights in the night sky: the Great Nebula in Orion. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind. In many countries, the December Solstice is considered an official change in season: for example the first day of winter in the North. Turns out Venus is brightest not when it's closest to Earth, but when it's almost at its closest and still shows us a large, bright crescent phase. So keep watching the comet this week! The Dragon capsule, meanwhile, previously flew three missions: Demo-2 in 2020, Crew-2 in 2021, and Axiom's private Ax-1 mission last year. With the departure of Saturn and Venus over the past two months, Jupiter is the only bright planet left in our twilight skies in February, and it's on its way out! Mag 2.6!? Please check back to hear more status updates, in-depth explanations of Webbs science and technology, and even some fun team anecdotes! This visualziation shows the major fragments of comet Showmaker-Levy 9 colliding with Jupiter in 1994. In 2020, the Hubble Space Telescope achieves its 30th year in orbit, wrote Nasa in a series of blog posts dedicated to the telescope. You should be able to see a few meteors on the couple of nights before and after as well. Searching for January 4 on the NASA Hubble birthday site reveals an incredible image of Saturn taken in infrared by Hubble in 1998, which would have been Newton's 355th birthday. Bob King pointed out at Skyandtelescope.com, See more Comet Leonard photos at EarthSky Community Photos. After revealing a trove of details about the moons Ganymede and Europa, the mission to Jupiter is setting its sights on sister moon Io. during 2021's two lunar eclipses. NASA's SpaceX Crew-6 mission launches from Kennedy Space Center in Florida with three astronauts and a cosmonaut on Thursday, March 2, 2023. I am so filled with pride for our team. Finding the Orion Nebula is easy on February nights, as the constellation Orion will be high in the south around 8 or 9 p.m. Look for the three stars of the hunter's belt, and then find the stars that hang below it forming Orion's sword. Poet Laureate Ada Limn Will Ride to Europa on NASA Spacecraft, NASA Retires InSight Mars Lander Mission After Years of Science, 40-Year Study Finds Mysterious Patterns in Temperatures at Jupiter, Juno Explores Jovian Moons During Extended Mission. Comet C/2021 A1 (Leonard) on December 21, 2021 from Rincon, Puerto Rico by Raymond Negron. & Michigan Tech. Onboard were NASA's Stephen Bowen and Woody Hoburg, the United Arab Emirates' Sultan Alneyadi, and Russian cosmonaut Andrey Fedyaev. center, with the dark expanse of the Coalsack nebula tucked under the console.log("Toggling fullscreen", $('.webgl_module_container').length) Historical Date: December 30, 2021. } We are now ready to align mirrors and commission instruments and have already proven that all the hardware associated with the optics (including 132 actuators) is working beautifully. If you want to find the one the Hubble Space Telescope took on your birthday, heres how you do it. At full speed, it takes about a day to move all the segments by just 1 millimeter. NASA JPL Software Engineer Melissa Soriano describes the third potential target for Scientist for a Day contestants: Pluto's moon Charon. GSFC And look for it to become a morning planet in April. Discover the cosmos! Donald Richardson passed away on January 28, 2022, in his sleep, at home in Indianapolis. $('body').css('overflow','') Dr. Nicola Fox will serve as the associate administrator for the agencys Science Mission Directorate. Source: Credit: NASA/JPL-Caltech. During the flyb OSIRIS-REx has imaged Bennu in higher resolution than we have Earth and our own Moon. Oops! Cooling of the telescope and instruments will also continue over the next month, with the near-infrared instruments ultimately reaching 37-39 kelvins. And through a telescope, it's a sight you'll never forget. But, to our eyes, they appear to move slowly due to the large distances involved. Comet Leonard swept closest to Earth on December 12, 2021, passing some 21 million miles (34 million km) away. Classic video explaining the history, debate and continuing discussion of the definition of a planet. Use this tool to see the current Moon phase and to plan ahead for other Moon views. Nature provides us with sky events seen once in a lifetime, Comet Leonard is one of these. The process of telescope alignment will take approximately three months., Erin Wolf, James Webb Space Telescope Program Manager, Ball Aerospace. Each mirror now needs to be deployed out by 12.5 millimeters (about half an inch) to get the pegs clear from the sockets. And look for Venus to form a trio with the Moon and Mars on the morning of February 26th. January begins with a new moon on the 2nd. Sound waves from the nascent universe, called baryon acoustic oscillations (BAOs), left their imprint on the cosmos by influencing galaxy distribution. Then compare the telescopic view five or 10 minutes later to detect the comets motion. ET Friday. The instruments are cooling, too, in a gradual and carefully controlled manner, and Webb is also continuing to gently coast outwards toward L2. Explanation: (92mm Refractor Telescope). featured, along with a brief explanation written by a professional astronomer. This animation, from Cassini's navigation team, shows the spacecraft's final orbits in 2016 and 2017. Jerry Bonnell (UMCP) Jupiter makes its exit, Venus at peak brightness, and the star-forming cloud next door. Generally speaking, getting a spacecraft to Sun-Earth L2 is fairly straightforward, but Webbs architecture added a wrinkle. Today, she serves as Editor-in-Chief of this website. NASA.gov brings you the latest images, videos and news from America's space agency. Watch live as NASA and SpaceX target 12:34 a.m. EST Thursday, March 2, for the launch of the Crew-6 mission from Florida's Kennedy Space Center with a team of three astronauts and a Russian cosmonaut. Scientists have completed the longest-ever study tracking temperatures in Jupiters upper atmosphere where its signature colorful striped clouds form. }) In fact, NASA stops communicating with our spacecraft at Mars for about 2 weeks every two years, when the planet is directly opposite the Sun. var $full = $('.webgl_module_container.full'); After two weeks of complex structural deployments, Webb has passed a major milestone and is now fully unfolded in space. Published: December 30, 2021. Webb would have to do a significant braking maneuver by thrusting toward the Sun to slow down. While we still have a long way to go before getting the science, the engineering feats that have been accomplished, on Earth and now in space, are awe-inspiring. https://t.co/d4sX1SDdYZ, C/2021 A1 (Comet Leonard) (@Comet2021a1) December 15, 2021. } The 18 radius of curvature (ROC) actuators were moved from their launch position as well. Hvis du nsker at tilpasse dine valg, skal du klikke p Administrer privatlivsindstillinger. As always, dark skies are recommended for this diffuse object.