New simulations have narrowed down where the newly discovered interstellar comet 3I/ATLAS likely came from, revealing it could be more than 3 billion years older than the solar system.

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

C/2022 E3 (ZTF), a comet that has recently made headlines as it flies closer to Earth, briefly developed an ethereal third tail thanks to a weird optical illusion.

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 ...

The unusually green-hued comet ZTF, also known as ZTF (C/2022 E3), developed a strange and rare tail yesterday, pointing toward our sun rather than trailing out behind it.

For comets with broad dust tails, measure the two endpoints of the tail’s width and record the extent; for example, a dust tail may sweep across the sky from a position angle of 45° to 90°.

A MYSTERIOUS cosmic object has been spotted zooming through our solar system – and astronomers say it is only the third of ...

The phenomenon, known as an anti-tail, is an optical illusion caused by the Earth's position in the comet's orbital plane.

DAN BARTLETT/NASA/AFP via Getty Although recent photographs pictured Comet C/2022 E3 with a distinct greenish color and two tails, don't expect to see the same with simply the naked eye.

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

Dark comets display no cometary tails whatsoever, but still have strong nongravitational accelerations in their trajectories like normal comets. How did we find dark comets?