Amazing photos in Mars Reconnaissance Orbiter celebration

NASA has posted a sampling of some of the most awe-inspiring photos of Mars, to celebrate the 15th anniversary of the launch of Mars Reconnaissance Orbiter. They are proof that Mars is a very photogenic world.

Truck-sized asteroid swept within 2,000 miles on Sunday

Asteroid ZTF0DxQ - now officially labeled 2020 QG - now holds the record for the closest flyby of Earth. It swept just 2,000 miles (3,000 km) from Earth's surface, or about a quarter of the diameter of Earth itself.

Mysterious dimming of Betelgeuse explained?

Observations with the Hubble Space Telescope revealed a large amount of dense hot gas moving outwards through Betelgeuse’s extended atmosphere. This gas might have cooled and formed a dust cloud that partially blocked the star's light as seen from Earth, earlier this year.

Exoplanet-hunter TESS completes its primary mission

NASA's 2nd planet-hunter, TESS, has spent 2 years surveying the sky for exoplanets orbiting distant stars. It has found over 2,000 exoplanets so far. TESS now moves into its extended mission phase.

Ceres’ bright spots come from salty water below

The mysterious bright spots on Ceres caused a sensation when the Dawn spacecraft first spied them in 2015. Now, they're known to be salt deposits from a recent or ongoing percolation of briny water from a large reservoir in Ceres' interior.

Astronomers spy a Milky Way look-alike 12 billion light-years away

This distant galaxy - SPT0418-47 - surprised astronomers by being organized enough to have a spinning disk and a galactic bulge, early in the history of our universe.

Arecibo Observatory damaged by broken lashing cable

The new damage to Arecibo, caused by the heavy cable, happened while repairs from 2017's Hurricane Maria were still ongoing.

Surprising number of exoplanets could host life

A new study suggests that distant stars in our Milky Way galaxy might be orbited by as many as 7 Earth-like planets, in the absence of a gas giant planet like Jupiter.

Images show Martian night sky pulsing with ultraviolet light

Vast areas of Mars’ nightside atmosphere glow and pulsate with ultraviolet light, according to images from NASA’s MAVEN spacecraft.

A deep, giant cloud disruption found on Venus

Researchers have discovered a giant atmospheric wave-like phenomenon in Venus' lower atmosphere, unlike anything else seen in the solar system. Evidence shows it has existed since at least 1983, but went completely undetected until now.