Galactic cosmic rays are high energy particles from explosive events like supernovae, zinging through our solar system, constantly bombarding both Earth and Mars. A researcher suggests they supply enough energy to make subsurface life on Mars possible.

The European Space Agency's Trace Gas Orbiter has unexpectedly detected carbon dioxide and ozone in Mars' atmosphere where the elusive methane should be, researchers in the UK and Russia have announced. The two gases may be hindering the probe's methane detections.

How we worked out when whales first evolved asymmetrical skulls.

The SpaceX Crew Dragon splashdown into the Gulf of Mexico today was the first splashdown in 45 years.

On August 2 and 3, 2020, everyone around the world (except far-northern Arctic latitudes) will see a full-looking moon from dusk until dawn.

A mysteriously long, thin cloud has again appeared over the Arsia Mons volcano on Mars.

These are the first spacecraft images yet acquired of the north pole of Ganymede, largest moon of the giant planet Jupiter. NASA's Juno spacecraft - now orbiting Jupiter - obtained them.

As darkness falls on these early August evenings, let the bright moon introduce you to bright Jupiter and golden Saturn. They've close are year and are headed for a great conjunction before 2020 ends.

It was a picture-perfect launch this morning for the Mars 2020 Perseverance rover, with good weather and no major hitches. The rover lifted off on a United Launch Alliance Atlas V rocket from Cape Canaveral Air Force Station in Florida.

And why this rediscovery of a lost world - called NGTS-11b - bodes well for finding habitable exoplanets.