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Astronomy Picture Of the Day (APOD)
The Old Moon in the New Moon's Arms
19.04.2002
Also known as the Moon's "ashen glow" or "the old Moon in the new Moon's arms", Earthshine is Earthlight reflected from the Moon's night side. This dramatic image of Earthshine...
Planets in the West
18.04.2002
Have you seen any bright planets lately? Chances are if you've been outside under clear skies just after sunset, then you have. Now shining in the west as bright "stars" in the night sky, are all five planets of the solar system known to ancient astronomers - Mercury, Venus, Mars, Saturn, and Jupiter.
The Glory
17.04.2002
Looking out the window of an airplane, you might be lucky enough to see "the glory" in the direction directly opposite the Sun. Before airplanes, the phenomenon, known to some as the heiligenschein or the Specter of the Brocken, was sometimes seen from mountaintops.
Millions of Stars in Omega Centauri
16.04.2002
Pictured above is the largest ball of stars in our Galaxy. About 10 million stars orbit the center of this globular cluster - named Omega Centauri - as this giant globular cluster orbits our Galactic center.
A New Truss for the International Space Station
15.04.2002
The International Space Station (ISS) is being fitted with a backbone. During the present visit of Space Shuttle Atlantis, astronauts are installing a huge truss on the growing space outpost. The truss is over 13 meters long and about 4.5 meters wide.
375: Candidate Quark Star
14.04.2002
Why is RJX J185635-375 so cool and so dim? Previously, this compact star held claim to being the closest neutron star -- only 150 light-years away. Now new observations and analysis indicate not only a cool temperature for RXJ J185635-375, pictured above, but also a larger distance: roughly 450 light-years away.
Pwyll: Icy Crater of Europa
13.04.2002
The impact crater Pwyll (a name from Celtic Mythology) is thought to represent one of the youngest features on the surface of Jupiter's moon Europa. A combination of color and high resolution black...
A Galaxy is not a Comet
12.04.2002
This gorgeous galaxy and comet portrait was recorded on April 5th in the skies over the Oriental Pyrenees near Figueres, Spain. From a site above 1,100 meters, astrophotographer Juan Carlos Casado used...
Antennae Galaxies in Near Infrared
11.04.2002
What happens when galaxies collide? One of the best studied examples of the jumble of star clusters, gas, and dust clouds produced by such a cosmic train wreck is the interacting galaxy pair NGC 4038 / NGC 4039, the Antennae Galaxies, only sixty million light-years away.
Unusual Rocks in Death Valley
10.04.2002
How did those big rocks end up on that strange terrain? One of the more unusual places here on Earth occurs inside Death Valley, California, USA. There a dried lakebed named Racetrack Playa exists that is almost perfectly flat, with the odd exception of some very large stones, one of which is pictured above.
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