Comets are not the only celestial bodies with tails. Earth and Mercury also possess them, formed by different mechanisms.

Saturn's huge moon Titan may not hide an ocean under its frozen surface but rather widespread pockets of liquid water, a new ...

CAPE CANAVERAL, Fla. (AP) — Saturn’s giant moon Titan may not have a vast underground ocean after all. Titan instead may hold ...

The Hubble Space Telescope and the Jupiter Icy Moons Explorer have captured fresh images of an interstellar comet as the ...

ESA's Solar Orbiter captured views of the planet Mercury passing in front of the Sun. Multiple instruments aboard the ...

Our planet Earth and Mercury have invisible tails stretching millions of kilometres. These cosmic tails are real phenomena.

Part 2 explores the dramatically different approaches to the launch systems, and the surprising similarities in the factors ...

Earth, like comets and Mercury, possesses a tail that potentially stretches up to two million kilometres into space on its ...

More studies are needed to determine whether TRAPPIST-1e has an atmosphere at all, or the hints of methane are linked to the ...

Monumentally important, this is the first image of an American astronaut in space. In the Project Mercury spacecraft named ...

NASA photo exhibition, family science shows, interactive lectures, and textile art celebrating 80 years of discovery.

Night sky update for December 17, 2025, covering the moon phase, visible planets, meteor showers, and key space and astronomy news from today ...