For the first time, scientists have spotted large patches of water ice on the surface of a comet, thanks to instruments aboard the European Space Agency's Rosetta orbiter.
Space Exploration
Jan 14, 2016
14
8308
With the help of the NASA/ESA Hubble Space Telescope, a German-led group of astronomers have observed the intriguing characteristics of an unusual type of object in the asteroid belt between Mars and Jupiter: two asteroids ...
Space Exploration
Sep 20, 2017
8
9733
(Phys.org)—A team of researchers with the Center of Planetary Science (CPS) has finally solved the mystery of the "Wow!" signal from 1977. It was a comet, they report, one that that was unknown at the time of the signal ...
A newly discovered comet is swinging through our cosmic neighborhood for the first time in more than 400 years.
Space Exploration
Sep 7, 2023
0
1162
The most famous comet of all is headed back toward Earth. Halley's comet reached aphelion—its farthest point from the sun—on Dec. 8, at which point it began its long journey back to the sun.
Planetary Sciences
Dec 12, 2023
0
891
Periodic mass extinctions on Earth, as indicated in the global fossil record, could be linked to a suspected ninth planet, according to research published by a faculty member of the University of Arkansas Department of Mathematical ...
Astronomy
Mar 30, 2016
115
3992
A comet called Atlas is currently heading toward the sun, and it just might put on a really good show in a couple of months. Discovered last December by the Asteroid Terrestrial-impact Last Alert system in Hawaii (thus the ...
Europe's science probe Philae sent home a treasure trove of data from a comet heading towards the Sun before falling silent as its power ran out, mission control said Saturday.
Space Exploration
Nov 15, 2014
31
0
Grab your binoculars: A comet that has fascinated scientists for five years approaches its closest distance from Earth this week—and you might be able to catch a glimpse.
Astronomy
Jul 13, 2022
1
1012
Comet Lovejoy lived up to its name by releasing large amounts of alcohol as well as a type of sugar into space, according to new observations by an international team. The discovery marks the first time ethyl alcohol, the ...
Space Exploration
Oct 23, 2015
42
43295
A comet is a Small Solar System Body that orbits the Sun. When close enough to the Sun, a comet exhibits a visible coma (fuzzy "atmosphere"), and sometimes a tail, both because of the effects of solar radiation upon the comet's nucleus. Comet nuclei are themselves loose collections of ice, dust and small rocky particles, ranging from a few kilometers to tens of kilometers across.
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