Elizabeth Rayne

Somewhere in the galaxy Messier 51, NASA's Chandra X-ray Observatory saw what might be a planet.

Asteroid impacts almost made Earth an inhospitable planet; impact vapors stripped oxygen from the atmosphere.

Graphite in a ruby has been found to be a possible remnant of ancient once-living things.

Future Mars-tronauts could get all the fuel they need for the journey home from... microbes?

Remember that strange signal from Proxima Centauri everyone thought was an extraterrestrial technosignature?

Astronomers have spotted a white dwarf star that is “switching” on and off, brightening and dimming.

Gaseous bubbles from black holes can burst, leaving behind filaments that seem to come from a smoking volcano.

We now know how gamma rays spawn, but where do they come from?

Europa is thought to have a subsurface ocean, so why is most of its water vapor only coming out one end?

Transients are brief, extremely bright explosions thought to come from dead and dying stars.