About three times a second, a 10,000-year-old stellar corpse sweeps a beam of gamma-rays toward Earth. Discovered by NASA’s Fermi Gamma-ray Space Telescope, the object, called a pulsar, is the first one known that only “blinks” in gamma rays.
“This is the first example of a new class of pulsars that will give us fundamental insights into how these collapsed … Read the rest of this article
About three times a second, a 10,000-year-old stellar corpse sweeps a beam of gamma-rays toward Earth. Just discovered by NASA’s Fermi Gamma-ray Space Telescope, the object, called a pulsar, is the first one known that “blinks” in pure gamma rays.
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AAVSO Alert 387:Event: Nova in Aquila
Discovered by: K. Itagaki (Yamagata, Japan)
Discovery date: 2008 September 22.5 UTC (JD 2454732.0)
Discovery magnitude: m = 14.0 (unfiltered)
Position: RA = 19h 06m 28.58s , Dec = +07d 06m 44.3s (from Itagaki)
Charts: Finter charts for this object may be plotted using VSP:… Read the rest of this article
Scientists using NASA’s RHESSI spacecraft have measured the roundness of the sun with unprecedented precision, and they find that it is not a perfect sphere. During years of high solar activity the sun develops a thin “cantaloupe skin” that significantly increases its apparent oblateness. Their results appear the Oct. 2nd edition of Science Express.
“The sun is the biggest … Read the rest of this article
WASHINGTON — A NASA spacecraft will conduct the second of three flybys of Mercury on Oct. 6 to photograph most of its remaining unseen surface and collect science data.
The MErcury Surface, Space ENvironment, GEochemistry, and Ranging, or MESSENGER, spacecraft will pass 125 miles above the planet’s cratered surface, taking more than 1200 pictures. The flyby also will provide a … Read the rest of this article
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NASA’s Mars Reconnaissance Orbiter has revealed hundreds of small fractures exposed on the Martian surface that billions of years ago directed flows of water through underground … Read the rest of this article
Members of the public can send their names around Earth on NASA’s Glory satellite, the first mission dedicated to understanding the effects of particles in the atmosphere and the sun’s variability on our climate.
The “Send Your Name Around the Earth” Web site (now offline) enables everyone to take part in the science mission and place their names in orbit … Read the rest of this article
Data from the Ulysses spacecraft, a joint NASA-European Space Agency mission, show the sun has reduced its output of solar wind to the lowest levels since accurate readings became available. The sun’s current state could reduce the natural shielding that envelops our solar system.
“The sun’s million mile-per-hour solar wind … Read the rest of this article
August 2008 – Double Vision: The Large Binocular Telescope in Arizona promises a revolutionary way to look at the night sky. The light from its two eight-and-a-half metre mirrors will produce images of unprecedented clarity and power, offering a glimpse beyond our solar system to the very beginning of time. Dr Chris Lintott visits Arizona to see the telescope first … Read the rest of this article
Starring: Colonel Buzz Aldrin, USAF, R, Captain Alan Bean, USN, R, Captain Eugene Cernan, USN, R, Brig. Gen. Michael Collins, USAF, R, Brig. Gen. Charles Duke, USAF
Update, June 2009: In the Shadow of the Moon is now available on Blu-Ray in the United Kingdom. It’s unclear if it will play on … Read the rest of this article
The Sun Now (Visible light)
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The Sun Now (H-Alpha light)
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Aurora Oval
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Aurora Oval
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