It’s 100 years since we learned the Milky Way is not the only galaxy
These objects were actually the Andromeda and Messier 33 galaxies, the closest large galaxies to our Milky Way. Today, up to ...
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NASA’s Swift Reaches 20th Anniversary in Improved Pointing Mode
After two decades in space, NASA’s Neil Gehrels Swift Observatory is performing better than ever thanks to a new operational strategy implemented earlier this year. The spacecraft has made great ...
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What Is the Solar Wind?
It emanates from features on the Sun such as dark and cool regions called coronal holes and active regions, which are ...