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Data from NASA's Voyager 1 Point to Interstellar Future
June 15, 2012 — Data from NASA's Voyager 1 spacecraft indicate that the venerable deep-space explorer has encountered a region in space where the intensity of charged particles from beyond our solar system has ... > full story -
New Solar Active Region Spitting out Flares
June 14, 2012 — An active region on the sun, numbered AR 1504, rotated into view over the left side of the sun on June 10, 2012. The region fired off two M-class flares and two coronal mass ejections (CMEs) on June ... > full story -
Spotting Ultrafine Loops in the Sun's Corona
June 12, 2012 — A key to understanding the dynamics of the sun and what causes the great solar explosions there relies on deciphering how material, heat and energy swirl across the sun's surface and rise into the ... > full story -
Highest-Energy Light from a Solar Flare Ever Detected
June 11, 2012 — During a powerful solar blast on March 7, NASA's Fermi Gamma-ray Space Telescope detected the highest-energy light ever associated with an eruption on the sun. The discovery heralds Fermi's new role ... > full story -
RHESSI Will Use Venus Transit to Improve Measurements of the Sun's Diameter
June 4, 2012 — With the new data obtained during the Venus transit on June 5-6, 2012, the RHESSI team hopes to improve the knowledge of the exact shape of the sun and provide a more accurate measure of the diameter ... > full story -
Venus Transit: June 5-6, 2012
June 1, 2012 — On June 5, 2012, at 6:03 PM EDT, the planet Venus will do something it has done only seven times since the invention of the telescope: cross in front of the sun. This transit is among the rarest of ... > full story -
Northern Lights Process Like Untangling Twisted Strands of Spaghetti?
June 1, 2012 — Scientists have reached a milestone in describing how the northern lights work by way of a process called "magnetic reconnection." The process is best imagined as untangling twisted strands of ... > full story -
Catching Solar Particles Infiltrating Earth's Atmosphere
May 31, 2012 — On May 17, 2012, an M-class flare exploded from the sun. They caused a shower of particles to cascade down toward Earth's surface. The shower created what's called a ground level enhancement ... > full story -
X-Ray 'Echoes' Map a Supermassive Black Hole's Environs in Distant Galaxies
May 31, 2012 — Astronomers have identified a long-sought X-ray "echo" that promises a new way to probe supersized black holes in distant ... > full story -
Electric Moon Jolts the Solar Wind
May 31, 2012 — With the moon as the most prominent object in the night sky and a major source of an invisible pull that creates ocean tides, many ancient cultures thought it could also affect our health or state of ... > full story
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