Jimmy Zwyers

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Rosetta spacecraft records eerie 'song' coming off comet

Scientists have picked up on the mysterious "song" of a comet speeding through deep space.<p>European Space Agency officials have used their Rosetta …

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Hubble Revisits a Globular Cluster’s Age

This new NASA/ESA Hubble Space Telescope image shows the globular cluster IC 4499.<p>Globular clusters are big balls of old stars that orbit around …

APOD: No X-rays from SN 2014J (2014 Aug 16) Image Credit: NASA / CXC / SAO / R. Margutti et al. http://apod.nasa.gov/apod/ap140816.html Explanation: Last January, telescopes in observatories around planet Earth were eagerly used to watch the rise of SN 2014J, a bright supernova in nearby galaxy M82. Still, the most important observations may have been from orbit where the Chandra X-ray Observatory saw nothing. Identified as a Type Ia supernova, the explosion of SN2014J was thought to be triggered by the buildup of mass on a white dwarf star steadily accreting material from a companion star. That model predicts X-rays would be generated when the supernova blastwave struck the material left surrounding the white dwarf. But no X-rays were seen from the supernova. The mostly blank close-ups centered on the supernova's position are shown in the before and after inset panels of Chandra's false color X-ray image of the M82 galaxy. The stunning lack of X-rays from SN 2014J will require astronomers to explore other models to explain what triggers these cosmic explosions. http://www.nasa.gov/ http://chandra.si.edu/ http://arxiv.org/abs/1405.1488 http://dx.doi.org/10.1088/0004-637X/790/1/52 Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140816 #APOD http://asterisk.apod.com/viewtopic.php?t=32797#p230500

Jupiter and Venus will align almost completely on Monday night

Look up. A flurry of UFO "sightings" is expected early on Monday morning when a spectacular "double star" is created as the two brightest planets in the sky align almost completely.<p>In what is said to be one of the highlights of the astronomy calendar this year, the conjunction of Jupiter and Venus …

Summer Triangle on August evenings

We’ve recently seen Orion’s return to the east before dawn, which means our northern summer is beginning to draw to the a close. But the Summer …

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Great Venus and Jupiter conjunction of 2014

Venus and Jupiter are the brightest planets! Look east before dawn … closest planet-planet conjunction of 2014 August 18. Dazzling near moon August …

This Pill Can Stop HIV

So why is no one taking it?<p>The drug that could end the HIV pandemic is already here. Branded Truvada, this pre-exposure prophylaxis (PrEP) prevents HIV infection by blocking the virus’s ability to replicate. “It’s a big deal,” says Robert Grant, a leading HIV/AIDS investigator at the University of …

Week's Best Space Pictures: Meteors Shower, Sweden Burns, and Rosetta Orbits

The Perseids compete with a supermoon, a Swedish forest goes up in smoke, and the Rosetta spacecraft orbits a comet.