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.
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.
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.
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 →
The first of two coronal mass ejections have slammed into Earth's magnetic field and space weather forecasters predict this rare one-two punch could result in 'supercharged' auroral displays. Continue reading →
Space weather forecasters have confirmed that Wednesday's solar flare also generated a coronal mass ejection that's now racing toward Earth. This is the second Earth-directed CME in two days. Continue reading →
At 1:46 p.m. ET (17:46 UT) on Wednesday, the sun reminded the solar system that it hasn't finished with solar maximum quite yet -- it unleashed a powerful solar flare and aimed it right at Earth. Continue reading →
Although the sun is our nearest star, we certainly don't have it all figured out. Continue reading →
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