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Rare blue asteroid sometimes behaves like a comet
Astronomers caught a glimpse of Phaethon - the bizarre blue asteroid responsible for the Geminid meteor shower - and found it even more enigmatic than they’d thought.
November 1, 2018
What made these weird straight lines on Dione?
Planetary scientists have discovered some very unusual long straight lines on the surface of Saturn's moon Dione. What created them?
November 1, 2018
Kepler planet-hunter retires
We currently have nearly 4,000 confirmed exoplanets, or planets orbiting distant suns. Kepler discovered more than 2,600 of them. But now Kepler is passing the torch.
October 31, 2018
Parker solar probe becomes closest-yet spacecraft to sun
On Monday, the Parker Solar Probe, launched August 12, broke the record for closest approach to the sun by a human-made object.
October 30, 2018
Ancient cold front in Perseus
Galactic cold fronts aren't like the cold fronts we experience on Earth. They're caused by galaxy clusters colliding into one another.
October 30, 2018
Why don’t Europa’s plumes have heat signatures?
Europa has been thought to have water vapor plumes similar to those on Saturn's moon Enceladus. But new research shows Europa's plumes differ significantly from those on Enceladus - or, perhaps - don't really exist at all.
October 29, 2018
Large and Small Magellanic Clouds collided!
Star motions in the Small Magellanic Cloud - as revealed by the Gaia space observatory - confirm that this small satellite galaxy of our Milky Way collided in the past with its larger neighbor.
October 28, 2018
Did scientists confirm Earth’s dust cloud satellites?
Have the Kordylewski clouds been confirmed? They were first reported In 1961, 2 clusters of dust, orbiting at about the moon's distance. They're faint. Have scientists now detected them?
October 28, 2018
Top 5 things to know about InSight Mars
InSight is a Mars lander - not a rover - designed to study a whole world from just one spot. It's due to arrive at Mars in November. Here are 5 highlights of the mission.
October 27, 2018
Lightning across the solar system
Lightning is beautiful and powerful on our own planet. Here's what's being discovered about lightning on other worlds, via NASA ScienceCasts.
October 26, 2018
