A comet's journey through the solar system is perilous and violent. A giant ejection of solar material from the sun could rip its tail off. Before it reaches Mars -- at some 230 million miles away from the sun -- the radiation of the sun begins to boil its water, the first step toward breaking the comet apart.
Astronomers using the NASA/ESA Hubble Space Telescope have observed a unique and baffling object in the asteroid belt that looks like a rotating lawn sprinkler or badminton shuttlecock. While this object is on an asteroid-like orbit, it looks like a comet, and is sending out tails of dust into space.
A new image of the sunward plunging comet ISON suggests that the comet is intact despite some predictions that the fragile icy nucleus might disintegrate as the sun warms it. The comet will pass closest to the sun on Nov. 28.
The first ever evidence of a comet entering Earth's atmosphere and exploding, raining down a shock wave of fire which obliterated every life form in its path, has been discovered by a team of South African scientists and international collaborators.
For 30 years, a large near-Earth asteroid wandered its lone, intrepid path, passing before the scrutinizing eyes of scientists while keeping something to itself: 3552 Don Quixote, whose journey stretches to the orbit of Jupiter, now appears to be a comet.
In a key geological moment about 66 million years ago, an enigmatic something killed off almost all the dinosaurs and some 70 percent of all other species living on Earth.
The brightest comet for several years should become visible in the Northern Hemisphere night sky over the next few days.
A recently-discovered comet has a chance - albeit a small one - of hitting Mars in October next year.
Scientists say they're homing in on the precise date of both the extinction of the dinosaurs 66 million years ago, and the massive impact that's believed by many to have caused it.
A group of researchers has poured scorn on the idea that a comet wiped out the North American Clovis people 13,000 years ago.
A newly-discovered comet looks likely to blaze brightly in our skies late next year.
More evidence has emerged that a massive comet hit the Earth about 13,000 years ago, backing up a widely-disputed theory.
Scientists say they've found more evidence of a major impact by a comet or asteroid, some 13,000 years ago.
French director David Cholewa recently released the first proper trailer for his upcoming sci-fi/horror Dead Shadows film.
The first big meteor shower of 2012 is set to kick off early Wednesday morning from about 3-5 a.m.
To the surprise and delight of astronomers, a comet discovered just two weeks ago as it hurtled towards the sun has skimmed the star and re-emerged the other side.
NASA is planning to use a giant crossbow and harpoon to capture samples from a speeding comet.
Astronomers have come up with two competing theories to explain a mysterious cosmic explosion first detected by NASA's Swift observatory on Christmas Day 2010.
Earth's oceans could once have been giant icebergs floating through space, an ESA team has concluded, after examining the isotopic composition of a comet.
Comet Hartley 2 is an excitable little chap - in a class of its own, say astronomers.