How the sun gets its spots
Sunspots are huge, dark, irregularly shaped--and yet, temporary--areas of intense magnetism on the sun that expand and contract as they move.
Space Exploration
Jan 7, 2011
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Page 11 - News tagged with sunspot
Sunspot 1121 unleashes X-ray flare
Active sunspot 1121 has unleashed one of the brightest x-ray solar flares in years, an M5.4-class eruption at 15:36 UT on Nov. 6th.
Space Exploration
Nov 11, 2010
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Image: Crackling with solar flares
Fast-growing sunspot 1112 is crackling with solar flares.
Space Exploration
Oct 21, 2010
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Discovery of an extrasolar earth-sized planet
(PhysOrg.com) -- There are now over 490 confirmed extrasolar planets. The vast majority are gas giants like Jupiter, but they are much stranger because many orbit close to their stars and so are much hotter than Jupiter (some ...
Astronomy
Oct 8, 2010
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Sunspots could soon disappear for decades: study
(PhysOrg.com) -- Sunspot formation is triggered by a magnetic field, which scientists say is steadily declining. They predict that by 2016 there may be no remaining sunspots, and the sun may stay spotless for several decades. ...
Image: C3-class solar flare erupts on Sept. 8, 2010
Just as sunspot 1105 was turning away from Earth on Sept. 8, the active region erupted, producing a C3-class solar flare (peak @ 2330 UT) and a fantastic prominence.
Space Exploration
Sep 10, 2010
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Why are sunspots a source of radio emissions? Researcher explains more
Why sunspots are a strong source of radio emissions and what information those emissions carry will be the focus of an invited talk by NJIT Research Professor Jeongwoo Lee tomorrow at the International Astronomical Union ...
Astronomy
Aug 25, 2010
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A Puzzling Collapse of Earth's Upper Atmosphere
NASA-funded researchers are monitoring a big event in our planet's atmosphere. High above Earth's surface where the atmosphere meets space, a rarefied layer of gas called "the thermosphere" recently collapsed and now is rebounding ...
Earth Sciences
Jul 15, 2010
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Why NASA Keeps a Close Eye on the Sun's Irradiance
(PhysOrg.com) -- For more than two centuries, scientists have wondered how much heat and light the sun expels, and whether this energy varies enough to change Earth’s climate. In the absence of a good method for measuring ...
Space Exploration
May 25, 2010
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Scientists find errors in hypothesis linking solar flares to global temperature
(PhysOrg.com) -- The field of climate science is nothing if not complex, where a host of variables interact with each other in intricate ways to produce various changes. Just like any other area of science, climate science ...
