A brilliant aurora appears to rise like a glowing, green smoke plume from Concordia research station in Antarctica in this photo by European Space Agency photographer Alessandro Mancini.
Today (Sept. 18) a unique airborne space observatory will perform its first scientific flight over Europe.
A new study suggests that Enceladus' geysers act as a 'snow-cannon,' making nearby moons snowy and reflective.
Don't panic, this isn't a massive hole on Jupiter. All is well on our largest neighbor; NASA's Juno spacecraft just managed to spot the shadow of its moon Io passing over its marbled clouds.
Despite the fact that humans landed on the moon many times during the Apollo missions half a century ago, doing so remains a tough business.
Beyond the border of our Milky Way lies a fascinating satellite galaxy that takes center stage in new imagery.
Rippling, dark-flecked sand dunes near Mars' north pole look like melting chocolate-chip ice cream in an image captured by the European-Russian Trace Gas Orbiter.
Astronomers have discovered the most massive example yet of the dead stars known as neutron stars, one almost too massive to exist, a new study finds.
Astronomers are rushing to study what appears to be the first known interstellar comet — and in some of the very earliest observations, it looks oddly familiar.
A Planet Earth-watching satellite has spotted a vast smoke plume from Saudi Arabian oil-processing facilities after a drone attack on Saturday (Sept. 14).
Small chunks of mineral studding the interiors of space rocks could help scientists pinpoint when the solar system began to form.
Karen Meech wouldn't credit Comet C/2019 Q4 with good timing. But when faced with a chance to study the first known interstellar comet, by golly you take it.
Water vapor, and likely clouds that rain liquid water, have been discovered on an exoplanet that lies in the habitable zone of its star. But there's an issue.
One of the most colorful wonders of the summer sky in the Northern Hemisphere, especially for deep-sky photographers, is the Rho Ophiuchi cloud complex.
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