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Old photos provide clues about a planet with giant rings
Photographic plates going back to 1890 are providing new clues as to whether a distant exoplanet has a giant ring system, more than 100 times wider than Saturn's.
October 26, 2018
Mars Express eyes a curious cloud
The long, thin, white cloud has been seen extending west of a Martian volcano since September 13. It looks as if it could be volcanic, yet it isn't. Here's what's going on.
October 26, 2018
Baby stars blow bubbles in Cat’s Paw Nebula
In the star-forming Cat's Paw Nebula, baby stars heat up the gas surrounding them. The gas then expands to form bubbles in the nebula.
October 25, 2018
This planetary nebula has 2 ultra-close stars at its heart
A planetary nebula isn't related to planets. It's an old star, sloughing off its outer layers. Now astronomers have spied 2 ultra-close stars at a planetary nebula's heart. The pair orbits in only 3 hours!
October 24, 2018
EVE and Wall-E have Mars in their sights
The MarCOs - 2 briefcase-sized CubeSats accompanying NASA’s InSight spacecraft - are chasing Mars as it orbits the sun. Along the way, they've captured the 1st-ever CubeSat image of Mars!
October 23, 2018
Astronomers spy 4 giant planets orbiting a very young star
Finding 4 giant planets orbiting another star isn't too unusual these days. But these massive planets are the largest known to orbit such a young star - CI Tau - only 2 million years old.
October 23, 2018
Our Milky Way almost collided with another galaxy
Astronomers found a snail-shaped substructure of stars in our larger Milky Way galaxy. It indicates the Milky Way is still enduring the effects of a near-collision that set millions of stars moving like ripples on a pond.
October 22, 2018
Europa may have towering ice spikes on its surface
Penitentes - large pointed spikes of ice - are known on Earth and Pluto. Jupiter's moon Europa might have them, too, according to new research. If they're there, they could make a future landing on Europa tricky.
October 20, 2018
Small asteroid passed closer than TV satellites
Newly-discovered Asteroid 2018 UA made an extremely close approach to Earth on Friday morning. Luckily, the space rock was too small to be dangerous.
October 20, 2018
Watch launch of BepiColombo mission to Mercury
The BepiColombo mission to our sun's innermost planet - fascinating little Mercury - launches from Europe’s spaceport in French Guiana on October 20 at 01:45 UTC (tonight at 9:45 p.m. EDT). Here's how to watch.
October 19, 2018
