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Edgewise view into our Milky Way
Our sun orbits the center of the Milky Way galaxy, which is 100 thousand light-years wide and contains 100 billion stars. Looking into the Milky Way ...
June 24, 2015
Geomagnetic storm strikes. Awesome auroras!
Storms on the sun sent giant plasma clouds across space, which interacted with Earth's magnetic field. See photos of this week's fabulous displays of auroras.
June 24, 2015
Venus is a crescent now
Venus will pass between the Earth and sun on August 15. So its day side is turning more and more away from us, and Venus appears as a waning crescent.
June 18, 2015
Lonely galaxy
NGC 6503 resides at the edge of a strangely empty patch of space called the Local Void.
June 14, 2015
Noctilucent clouds and an aurora
Auroras stem from activity on the sun and so are seen when the sun has been active. Noctilucent clouds are seasonal, seen in late May through August each year.
June 12, 2015
Great-horned owl eclipses the moon
A young owl on her first night out from the nest, and a moon just past full.
June 10, 2015
Reflections of volcanic sunset in Africa
Aerosols from Calbuco Volcano in Chile - which have colored sunsets in parts of the Southern Hemisphere since April - provide rare glimpses of unusual beauty.
June 9, 2015
Bubble nebula
Energetic radiation from a hot, young central star ionizes a shell of gas, causing it to glow and creating this bubble in space.
June 4, 2015
