Results tagged “Comet”

Astrophysicists from Far Eastern Federal University (FEFU, Russia), South Korea, and the USA appear in Monthly Notices of the Royal Astronomical Society, suggesting carbon indicates time comets have spent in the Solar System -- the less carbon, the longer they have been in the proximity of the Sun.

Comet Neowise Seen From Orbit

The tiny shooting star in the lower center of this image is Comet Neowise pictured from the International Space Station as it orbited above the Mediterranean Sea in between Tunisia and Italy.

Hubble Watches Comet ATLAS Disintegrate

These two Hubble Space Telescope images of comet C/2019 Y4 (ATLAS), taken on April 20 and 23, 2020, provide the sharpest views yet of the breakup of the fragile comet.

Astronomers at the National Astronomical Observatory of Japan (NAOJ) have analyzed the paths of two objects heading out of the solar system forever and determined that they also most likely originated from outside of the solar system.

The NASA/ESA Hubble Space Telescope has once again captured comet 2I/Borisov streaking through our solar system on its way back into interstellar space.

2l/Borisov, first spotted this summer, continues to draw nearer to Earth and will reach its closest approach -- about 190 million miles -- in early December.

Scientists analysing the treasure trove of images taken by ESA's Rosetta mission have turned up more evidence for curious bouncing boulders and dramatic cliff collapses.

Rosetta observations of 67P/Churyumov-Gerasimenko (67P) reveal that most changes occur in the fallback-generated smooth terrains, vast deposits of granular material blanketing the comet's northern hemisphere.

Science fiction stories are chock full of terraforming schemes and oxygen generators for a very good reason -- we humans need molecular oxygen (O2) to breathe, and space is essentially devoid of it. Even on other planets with thick atmospheres, O2 is hard to come by.

The release of gases through sublimation is the defining process of comets.

Before NASA's Transiting Exoplanet Survey Satellite (TESS) started science operations on July 25, 2018, the planet hunter sent back a stunning sequence of serendipitous images showing the motion of a comet.

The atmosphere of Rosetta's comet 67P/Churyumov-Gerasimenko is far from homogeneous.

NASA's Hubble Space Telescope has photographed the farthest active inbound comet ever seen, at a whopping distance of 1.5 billion miles from the Sun (beyond Saturn's orbit).

Watching Landslides On A Comet

Sudden and short-lived outbursts were observed frequently during Rosetta's two-year mission at Comet 67P/Churyumov-Gerasimenko.

Though not visible to the naked eye or even with binoculars, the green-tailed Comet 45P/Honda-Mrkos-Pajdusakova (HMP) did not escape the gaze of the world-renowned Arecibo Observatory.

Scientists using the NASA/ESA Hubble Space Telescope have observed, for the first time, a massive, comet-like object that has been ripped apart and scattered in the atmosphere of a white dwarf.

In September 2015, a team of astronomers from the National Astronomical Observatory of Japan, University of Michigan, Kyoto Sangyo University, Rikkyo University and the University of Tokyo successfully observed the entire hydrogen coma of the comet 67P/Churyumov-Gerasimenko, using the LAICA telescope onboard the PROCYON spacecraft.

NEOWISE Discovers One, Maybe Two Comets

NASA's NEOWISE mission has recently discovered some celestial objects traveling through our neighborhood, including one on the blurry line between asteroid and comet. Another--definitely a comet--might be seen with binoculars through next week.

A new study has revealed similarities and relationships between certain types of chemicals found on 30 different comets, which vary widely in their overall composition compared to one another.

Astronomers have captured the sharpest, most detailed observations of a comet breaking apart 67 million miles from Earth, using NASA's Hubble Space Telescope.

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