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“Sun”

Mar 5, 2015 11:58 AM ET
It's not a spare moon of ours, exactly, but Earth does have a sort of gravitational buddy out there, in the mellifluously named 3753 Cruithne. It orbits the sun, just like us, and is locked with Earth in what scientists call orbital resonance.
Mar 4, 2015 11:06 AM ET // Ian O'Neill
A new computer model of our sun's magnetic field suggests the shape of our solar system's heliosphere is stranger than we ever thought.
Mar 2, 2015 11:00 AM ET // Stuart Gary, ABC Science Online
This image isn't a close-up from the garden, but an active area of strong magnetic fields on the sun's chromosphere.
Feb 17, 2015 03:54 PM ET // Ian O'Neill
Our sun will not explode as a powerful supernova when it eventually runs out of fuel, but that doesn't mean there won't be fireworks.
Jan 28, 2015 10:03 AM ET
On Earth, the sun usually looks like an orange blob or a yellow blob, depending on the time of day. Fascinating, sure, but - a blob. If you want to take the boring out of the sun, you need NASA images. Amy explains how the agency gets its cool shots.
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.
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