Scenes from Two Hemispheres
15.01.2010

The stars of a summer night on the left and the winter night sky on the right are the same stars. In fact, both pictures were taken in late December and have similar fields of view.

Young Moon Meets Evening Star
1.12.2011

Now appearing as planet Earth's evening star, brilliant Venus shines in western skies at twilight. Standing above a rugged horizon and warm sunset colors, the twilight's celestial beacon was joined last Saturday by a Moon 35 hours young in this gorgeous skyscape.

The Iron Tail of Comet McNaught
4.05.2007

Outstanding in planet Earth's sky early this year, Comet McNaught is captured in this view from the STEREO A spacecraft. McNaught's coma is so bright, it blooms into the long horizontal stripe at the bottom of the field.

Introducing Comet ISON
1.10.2012

Could this dim spot brighten into one of the brightest comets ever? It's possible. Alternatively, the comet could break up when it gets closer to the Sun, or brighten much more modestly.

Noctilucent Clouds
26.07.1999

Sometimes it's night on the ground but day in the air. As the Earth rotates to eclipse the Sun, sunset rises up from the ground. Therefore, at sunset on the ground, sunlight still shines on clouds above.

The Milky Way Near the Southern Cross
18.06.2000

This breathtaking patch of sky would be above you were you to stand at the South Pole of the Earth. Just above and to the right of this photograph's center are the four stars that mark the boundaries of the famous Southern Cross.

The Sun Erupts
13.08.1995

The sun was captured in 1973 throwing one of the largest eruptive prominences ever recorded. Sol, our sun, is a normal star. It formed about 5 billion years ago, and will last about another 5 billion years. The sun will never explode, and a solar flare will never destroy the earth.

Comet Hyakutake and the Milky Way
17.08.1998

Two years ago, the Great Comet of 1996, Comet Hyakutake, inched across our northern sky during its long orbit around the Sun. Visible above as the bright spot with the faint tail near...

The International Space Station from Orbit
16.08.2005

The International Space Station (ISS) is the largest human-made object ever to orbit the Earth. Late last month and earlier this month, the station was visited and resupplied by space shuttle Discovery. The ISS is currently operated by the Expedition 11 crew, consisting a Russian and an American astronaut.

The Milky Way Over Tenerife
5.04.2011

Have you ever seen the band of our Milky Way Galaxy? Chances are you have never seen it like this -- nor could you. In a clear sky from a dark location at the right time, a faint band of light is visible across the sky. This band is the disk of our spiral galaxy.