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.

Comets can have one or two tails, and they both depend on the Sun. Comets are icy and as they get close to the Sun those material sublimate – going from solid to gas – and form the coma, the ...

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°.

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.

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

Shortly after Mercury reached its closest point to the sun, its massive, comet-like tail became unusually visible in the night sky and was captured in a stunning new photo.

If the breathtaking view of a solar eclipse April 8 isn't enough, skygazers may also be able to see the "devil comet." ...