The long-serving space telescope saw the third interloper to enter the solar system from beyond its limits late on Monday ...

New photos, including a striking technicolor timelapse, show off the newly discovered interstellar object 3I/ATLAS as it ...

The photos reveal a bright and well-developed coma, the cloud of gas and dust surrounding the comet's nucleus, with striking ...

An animated image shows C/2011 L4 in motion. A newly discovered comet from the farthest reaches of the solar system could become a sky spectacle in 2013, astronomers say. No guarantees, though ...

Here's what you need to know to treat yourself to a rare, colorful cosmic sight this weekend. How to see Mars and Comet ZTF The Hubble Space Telescope took this snapshot of Mars in the 1990s.

The European Space Agency said it received a signal at 11:03 a.m. EST from the 100-kilogram (220-pound) Philae lander after it touched down on the icy surface of the comet named 67P/Churyumov ...

Two couples include a rare comet in their proposals for a once-in-a-lifetime cosmic engagement By Lauren M. Johnson , CNN 3 minute read ...

The cosmic interloper was first thought to be an interstellar asteroid, a chunk of rock shed by another star system. Then astronomers decided it must be a comet , likewise flung loose from some ...

The comet comes from the Oort Cloud, a realm filled with frozen debris on the outer edge of our solar system. Initial observations suggest that the comet may orbit the sun once every 80,000 years.