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“Sun”

Jan 21, 2015 03:00 PM ET // Ian O'Neill
Jan. 19, 2015, was a red letter day for NASA's Solar Dynamics Observatory -- one of its instruments, having continually stared at the sun for 5 years, captured its 100 millionth observation of our nearest star.
Jan 8, 2015 01:15 PM ET // Calla Cofield, SPACE.com
A machine on Earth capable of recreating the conditions inside the sun's heart is helping scientists study how iron behaves at mind-boggling temperatures. The results of the experiment, so far, have defied expectations and just might help settle a long-standing solar puzzle.
Dec 22, 2014 03:12 PM ET // Ian O'Neill
NASA's Nuclear Spectroscopic Telescope Array has turned its gaze from distant black holes and focused on our sun, producing the most sensitive measurement of high-energy solar X-rays ever achieved.
Oct 25, 2014 04:39 PM ET // Ian O'Neill
There was already a high probability that active region (AR) 2192 was going to erupt with a powerful solar flare, so it came as little surprise when two X-class flares erupted within 24 hours of eachother.
Oct 24, 2014 12:24 PM ET
Julian gives a primer on sunspots -- what causes them, how often they happen, and most importantly: whether or not an enormous one is set to fire straight at Earth.
Oct 24, 2014 01:25 PM ET // Charles Q. Choi, SPACE.com
Eruptions on the sun's surface are probably caused by giant, unstable magnetic plasma arches, a new study reports — a discovery that brings scientists one step closer to predicting solar outbursts that can wreak havoc on Earth.
Oct 23, 2014 02:41 PM ET // Ian O'Neill
Just as the US prepares to watch the partial solar eclipse today, nearly 100 million miles away on the sun a possible solar storm is brewing. Continue reading →
Oct 23, 2014 12:20 PM ET // Mike Wall, Space.com
A partial solar eclipse will darken North American skies Thursday afternoon (Oct. 23), and you can watch the dramatic celestial event online if clouds hinder your view.
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