For the past 17 years, a lone spacecraft has been following Earth’s tracks in its orbit around the Sun and capturing unprecedented views of our host star. Now, STEREO-A has finally caught up with its home planet, lapping us in our cosmic trail and meeting the Earth for a brief rendezvous. On Saturday, NASA’s STEREO-A…
Trying to watch the sun’s explosions with your naked eyes is a recipe for blindness, but luckily NASA has a couple of telescopes that can show you all that fusion glory with none of the permanent ocular damage. Take, for instance, this 320,000km long canyon of fire.