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Hints of a quiet, stray black hole
Theoretical studies predict 100 million to 1 billion black holes in our Milky Way galaxy. So far, astronomers have found about 60. A serendipitous discovery could lead to finding more.
February 13, 2017
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
The ecliptic is the path of the sun
The ecliptic is an imaginary line that marks the path of the sun. You can also find the planets and moon near this line, tracing the plane of our solar system.
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
