Green comet zooming our way, last visited 50,000 years ago
A comet is streaking back our way after 50,000 years.
Planetary Sciences
Jan 27, 2023
1
57
News tagged with comet
Newly discovered green comet expected to whiz by Earth
A rare, recently discovered comet with a greenish tint is expected to whiz by Earth over the next few weeks, but sky gazers may need binoculars or a small telescope to see it.
Astronomy
Jan 16, 2023
0
102
Once in 50,000-year comet may be visible to the naked eye
A newly discovered comet could be visible to the naked eye as it shoots past Earth and the Sun in the coming weeks for the first time in 50,000 years, astronomers have said.
Space Exploration
Jan 7, 2023
1
2385
Comet Interceptor construction moves forward
ESA and OHB have signed a contract to move forward with the design and construction of ESA's ambitious Comet Interceptor spacecraft, planned for launch in 2029.
Space Exploration
Dec 16, 2022
0
3
Mars megatsunami may have been caused by Chicxulub-like asteroid impact
A Martian megatsunami may have been caused by an asteroid collision similar to the Chicxulub impact—which contributed to the mass extinction of all non-avian dinosaurs on Earth 66 million years ago—in a shallow ocean ...
Planetary Sciences
Dec 1, 2022
11
78
New study of comets provides insight into chemical composition of early solar system
A new study from the University of Central Florida has found strong support that the outgassing of molecules from comets could be the result of the composition from the beginning of our solar system.
Planetary Sciences
Nov 4, 2022
0
495
Scientists show how terrain evolves on an icy comet
With an eye toward a possible return mission years in the future, Cornell astronomers have shown how smooth terrains—a good place to land a spacecraft and to scoop up samples—evolve on the icy world of comets.
Astronomy
Sep 1, 2022
0
40
Madrid meteor's cometary origins unearthed
A fireball spotted over Madrid has had its astronomical ancestry unearthed. While it ended its days burning up in Earth's atmosphere on 31 July this year, the fragment began its life as part of Comet 169P/NEAT, responsible ...
Astronomy
Aug 10, 2022
0
20
K2, the brightest comet in our solar system, will swing by Earth this week: Here's when to see it
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
Building blocks for RNA-based life abound at center of our galaxy
Nitriles, a class of organic molecules with a cyano group—that is, a carbon atom bound with a triple unsaturated bond to a nitrogen atom—are typically toxic. But paradoxically, they are also a key precursor for molecules ...
Astronomy
Jul 8, 2022
1
641
Comet
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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