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Green Comet 45P: Photos and video
Green Comet 45P has been in our sky for months and passed closest on February 11, 2017. It's a faint one, but intrepid astronomers have captured some wonderful images!
February 12, 2017
Full braking at Alpha Centauri
Space visionaries might have figured out a way to travel within decades to the nearest star system, Alpha Centauri. But, once we get there, how do we slow down?
February 10, 2017
Northern U.S. meteor dazzles thousands
Early Monday morning, thousands of people across multiple northern U.S. states watched a brilliant meteor streak across the sky. It then plunged into Lake Michigan.
February 9, 2017
Vanishing ice volcanoes on Ceres?
Dwarf planet Ceres - largest body in the asteroid belt - has at least 1 known ice volcano. But that volcano might also have older siblings that disappeared over millions of years.
February 5, 2017
Saturn’s rings: Up close and personal
These incredible new views from the Cassini spacecraft show Saturn's rings in unprecedented detail.
February 2, 2017
Wow! Jupiter and Little Red Spot
The Little Red Spot is Jupiter's 3rd-largest anticyclonic storm. Earth-based observers have tracked it for the last 23 years. The Juno spacecraft captured this amazing image.
January 28, 2017
Opportunity celebrates 13 years on Mars
Last week, NASA’s rover Opportunity celebrated 13 Earth-years exploring Mars. She's officially a teenager. This new video explains 6 ways she’s behaving like one.
January 27, 2017
Asteroid buzzed Earth and moon January 25
Asteroid 2017 BX - found just days ago - is maybe about as big as a house. It passed safely Tuesday night or Wednesday, depending on your time zone.
January 25, 2017
What’s killing these galaxies?
It’s an astrophysical whodunnit. Across the universe, galaxies are being killed. Scientists want to know, what’s killing them?
January 23, 2017
Mars rover examines possible mud cracks
The site on Mars is called Old Soaker. It seems to have cracks, as in a dry lake bed. These may be Curiosity's 1st confirmed mud cracks. If so, they're keys to understanding an ancient, warmer, wetter Mars.
January 19, 2017
