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Bright moon still close to Spica May 18
The waxing gibbous moon has moved eastward in its orbit around Earth, but it's still close to Spica, Virgo's brightest star.
May 18, 2016
Your top 4 questions about tornadoes
May is the peak month for twisters here in the U.S.
May 17, 2016
Bright moon close to Spica on May 17
Practiced stargazers look along the Zodiac to find planets, and you can, too. The trick is learning to identify key Zodiac stars, such as Spica.
May 17, 2016
Small blue galaxy offers Big Bang clues
This galaxy - nicknamed 'little lion' - contains the lowest level of heavy elements ever detected in a gravitationally bound system of stars.
May 16, 2016
How Earth’s magnetic field is changing
Data from a trio of satellites show rapid local changes in Earth's magnetic field. The cause is likely accelerations in the flow of liquid iron near Earth's core.
May 16, 2016
When will 2007 OR10 get a name?
2007 OR10 is now known as the third-largest dwarf planet. It's about a third smaller than Pluto. It's the largest unnamed body in our solar system.
May 16, 2016
Moon halo, stars, planet over Chile
Haloes around the moon happen when moonlight shines through tiny ice crystals in the upper air. Here's a moon halo, with bright stars and Jupiter nearby.
May 16, 2016
Acadia at 3 a.m.
Tom Wildoner captured this view on May 12 in Maine's Acadia National Park. See bright Mars on the right.
May 15, 2016
News about mystery star KIC 8462852 aka Tabby’s Star
Alien megastructures - aka Dyson spheres - around a star 1,500 light-years away? Astronomers struggle to explain the most mysterious star in the universe.
May 14, 2016
New look at Mercury’s peaks and valleys
First global topographic map of Mercury shows the whole surface of our solar system's innermost planet. MESSENGER mission scientists used 100,000 images to create it.
May 14, 2016
