Asteroid 2004 BL86 to Fly by Earth Safely on January 26
An asteroid, designated 2004 BL86, will safely pass about three times the distance of Earth to the moon on January 26. From its reflected brightness, astronomers…
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Pinpointing Saturn’s Position to Within 2 Miles
Scientists have paired NASA’s Cassini spacecraft with the National Science Foundation’s Very Long Baseline Array (VLBA) radio-telescope system to pinpoint the position of Saturn and its…
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Citizen Scientists Identify 1 Million Potential Debris Disks
A NASA-sponsored website designed to crowdsource analysis of data from the agency’s Wide-field Infrared Survey Explorer (WISE) mission has reached an impressive milestone. In less than…
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Kepler Marks 1,000th Earth-Like Exoplanet Discovery
How many stars like our sun host planets like our Earth? NASA’s Kepler Space Telescope continuously monitored more than 150,000 stars beyond our solar system, and…
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AAVSO Alert Notice 507: Observations of the Eclipsing Binary B Persei
AAVSO Alert Notice 506 Observations of the eclipsing binary b Persei January 5, 2015 Dr. Robert Zavala (USNO-Flagstaff) and collaborators request observations of the bright variable…
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Chandra Detects Record-Breaking Outburst From Milky Way’s Black Hole
Astronomers have observed the largest X-ray flare ever detected from the supermassive black hole at the center of the Milky Way galaxy. This event, detected by…
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A Celebration of 25 Years of Hubble
In 2015, Hubble will celebrate its 25th anniversary. Check out the new Hubble25 site for a host of festivities centered on Hubble’s history and explorations. The…
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Cliffs, Trenches, Faults, Giant Plateaus and Volcanoes on Mars
Although Mars is a very alien planet, some aspects of its geology are surprisingly familiar. This Mars Express image shows a snippet of a region of…
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The X-Ray Sun
For the first time, a mission designed to set its eyes on black holes and other objects far from our solar system has turned its gaze…
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A Festive Supernova
Most celestial events unfold over thousands of years or more, making it impossible to follow their evolution on human timescales. Supernovas are notable exceptions, the powerful…
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