C/2021 A1, also known as Comet Leonard, is expected to reach peak size and visibility the weekend of December 10-12 in the pre-dawn sky. It will be at perihelion on January 3, 2022.
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Comet NEOWISE dazzles in dawn sky
Comet C2020 F3 NEOWISE is shining brightly in the dawn sky throughout the month of July.
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Comet SWAN visible
Comet SWAN (C/2020 F8), discovered by Australian amateur astronomer, Michael Mattiazzo using the Solar Wind Anisotropies camera on NASA’s Solar and Heliospheric Observatory (SOHO), is now a naken eye object visible from the Southern Hemisphere.
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Comet ATLAS approaching
Comet C/2019 Y4 ATLAS, discovered in December 2019 by the Asteroid Terrestrial-impact Last Alert System (ATLAS) in Mauna Loa in Hawaii is approaching the inner solar system. It is currently observed to be disintegrating.
Comet Borisov fragmenting
Interstellar comet 2I/Borisov, discovered in 2019, has been seen breaking apart in March 2020.
Hubble Space Telescope observations indicate that fragments of the comet are drifting away, as reported in the Astronomer’s Telegram on April 2, 2020.
Possible Interstellar Comet Discovered
Comet 2I/Borisov, discovered on August 29, 2019, has astronomers intrigued as it is only the second known object to be have an orbit and velocity that suggests it is of interstellar origin. It’s orbit has an eccentricity of about 3.5. It will reach perihelion on December 7, 2019.
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Hyperactive comets and terrestial water
New study shows a certain family of comets contain water similar to earth’s water.
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Comet 46P making close approach
The comet 46P/Wirtanen (46P) is set to make a close approach to Earth this weekend. At its closest, 46P will pass a mere 11.7 million km from our planet.
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Rosetta completes mission with controlled impact
ESA’s Rosetta mission has concluded with a controlled descent into Comet 67P/Churyumov–Gerasimenko. “The descent gave Rosetta the opportunity to study the comet’s gas, dust and plasma environment very close to its surface, as well as take very high-resolution images… after becoming the first spacecraft to orbit a comet, and the first to deploy a lander, Philae, in November 2014.” More
Rosetta Photos
Rosetta’s OSIRIS camera team has launched a new website to showcase their recent images of Comet 67P/Churyumov–Gerasimenko.