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NASA's Sun-observing IRIS mission

While it seems static from our vantage point on Earth 93 million miles away, the sun is constantly changing. Under the influence of complex magnetic forces, material moves throughout the solar atmosphere and can burst forth ...

dateDec 01, 2016 in Space Exploration
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Far away, so close

During the last few weeks of its mission, ESA's Rosetta spacecraft ventured closer than it had ever been to Comet 67P/Churyumov–Gerasimenko. Eventually, it came to rest on the surface in a daring descent on 30 September ...

dateNov 14, 2016 in Space Exploration
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STEREO—10 years of revolutionary solar views

Launched 10 years ago, on Oct. 25, 2006, the twin spacecraft of NASA's STEREO mission – short for Solar and Terrestrial Relations Observatory – have given us unprecedented views of the sun, including the first-ever simultaneous ...

dateOct 26, 2016 in Space Exploration
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How to read a STEREO image

In the same way that two eyes give humans a three-dimensional perception of the world around us, the twin spacecraft of NASA's Solar Terrestrial Relations Observatory mission, or STEREO, enable us to understand the sun in ...

dateOct 26, 2016 in Space Exploration
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Curious tilt of the sun traced to undiscovered planet

Planet Nine—the undiscovered planet at the edge of the Solar System that was predicted by the work of Caltech's Konstantin Batygin and Mike Brown in January 2016—appears to be responsible for the unusual tilt of the sun, ...

dateOct 19, 2016 in Astronomy
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