NASA scientists are crisscrossing the globe in 2017 – from a Hawaiian volcano to Colorado mountain tops and west Pacific islands – to investigate critical scientific questions about how our planet is changing and what impacts humans are having on it.
On Dec. 31, 2016, official clocks around the world will add a leap second just before midnight UTC (6:59:59 p.m. EST). NASA missions will also have to make the switch, including the Solar Dynamics Observatory, or SDO mission, which watches the sun 24/7.
NASA's STEREO mission, which launched 10 years ago, uses an instrument called a coronagraph to study the the sun's outer atmosphere. Here's a guide to reading a STEREO image and learning key features of coronagraph data.
Launched 10 years ago, on Oct. 25, 2006, the twin spacecraft of NASA's STEREO mission have given us unprecedented views of the sun, including the first-ever simultaneous view of our entire star at once.
This new-fangled telescope optic could give scientists the resolution they need to see finer details still invisible with current observing tools – a jump in resolution that could help answer a 50-year-old question about the physical processes heating the sun's million-degree corona.