APOD: 2000 March 7 - Zal Patera on Jupiter's Moon Io
Zal Patera on Jupiter's Moon Io - From 26,000 miles (41,842 km) away, the orbiter Galileo captured this image of Zal Patera, a cauldron of flowing lava, gaseous vents and tremendous peaks. Red lava erupts from the base of the volcanic caldera and cooling black lava lines the edge of a volcanic plateau
APOD: 2011 October 21 - Clouds of Perseus
Clouds of Perseus ~ contains over 10,000 solar masses of gas and dust, but the eye is drawn to red NGC 1499. Known as the California Nebula, its characteristic glow of atomic hydrogen gas is fueled by ultraviolet light from luminous blue star Xi Persei. Farther along, intriguing young star cluster IC 348 and neighboring Flying Ghost Nebula. On the outskirts of a giant molecular cloud, another active star forming region, NGC 1333, lies near the edge of the wide field of view.
APOD: 2017 May 12 - M13: The Great Globular Cluster in Hercules
M13: The Great Globular Cluster in Hercules Astronomy Picture of the Day May 12 2017 ----------- In 1716 English astronomer Edmond Halley noted "This is but a little Patch but it shews itself to the naked Eye when the Sky is serene and the Moon absent." Of course M13 is now less modestly recognized as the Great Globular Cluster in Hercules one of the brightest globular star clusters in the northern sky. Telescopic views reveal the spectacular cluster's hundreds of thousands of stars. At a di...
This object, called the Helix nebula, lies 650 light-years away in the constellation of Aquarius. Also known by the catalog number NGC 7293, it is a typical example of a class of objects called planetary nebulae. Discovered in the 18th century, these cosmic works of art were erroneously named for their resemblance to gas-giant planets.
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NuSTAR NASA telescope has found evidence that a massive star exploded in an unbalanced way, ejecting material in a direction and the core of the star in another. The results offer the best evidence that exploding stars of this type, called Type II or core collapse supernovae, are asymmetric, a phenomenon that had been difficult to prove so far, NASA said in a statement.