The annual competition for professional and amateur astrophotographers released its shortlisted images, which capture the ...

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

A newly discovered object from deep space may be the oldest comet ever observed—possibly more than 7 billion years old, and ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen—possibly predating our solar ...

After running a new kind of computer simulation, scientists believe the comet originated from a rarely seen corner of the ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

The interstellar comet 3I/Atlas is the fastest and largest of its kind, giving astronomers a rare glimpse into extrasolar ...

3I/ATLAS, also known as C/2025 N1, is a comet from interstellar space, meaning it originated in another star system and ...

Two Tails: Comets have two distinct tails: a dust tail and an ion tail. The dust tail is made up of small particles from the comet's nucleus, while the ion tail is composed of ionised gas.

A Disintegrating Planet Is Shedding Matter and Has a Comet-Like Tail Learn why the planet, BD+05 4868 Ab, is only the fourth such discovered and will disappear in one to two million years.

Jan. 1, 1884 The New York Times Archives See the article in its original context from January 1, 1884, Page 4 Buy Reprints View on timesmachine ...

Astronomers have discovered an exoplanet with a tail, like a gigantic comet. The planet, known as WASP-69b, is slowly evaporating in the radiation of its host star.