Scientists have revived the theory that short-period comets could have played a crucial role in filling Earth's oceans with ...

Read about the NASA requirements for potential teaming partners to support an upcoming heliophysics medium explorer mission.

Scientists say cometary dust affects interpretation of spacecraft measurements, reopening the case for comets as potential ...

Out of this world! Astronomer Michelle Thaller will share about James Webb Space Telescope during free lecture Dec. 6 at ...

Camp Century, a subterranean military base in Greenland, was spotted under the icy expanse during a flight earlier this year.

The Japan-led XRISM (X-ray Imaging and Spectroscopy Mission) observatory has captured the most detailed portrait yet of gases ...

GRACE satellites take monthly measurements of changes in Earth 's gravity, which allows scientists to see if there's also a ...

“A wave of comet and asteroid collisions with the solar system’s inner planets 4 billion years ago would have made this ...