When will the sun die? NASA reveals surprising facts
Like other stars, the sun will eventually run out of energy and end up engulfing mercury and venus, possibly earth as well. The sun is about 150 million kilometers away from the earth.
See A Solar Sail In The Night Sky - NASA Explains How
NASA's Advanced Composite Solar Sail System (ACS3) will be visible from the ground. Find out when you can see it on the NASA app on a mobile device. Credit: NASA/JPL-Caltech ...