The biggest stories of the day delivered to your inbox.

In a rare first-of-its-kind image, Jupiter, the largest planet in the solar system is seen surrounded by colossal clouds of X-rays that have so far remained invisible to the eyes and even telescopes.

While sunsets on Mars are uniquely moody, NASA 's Curiosity rover has captured a stunning image of a martian sunset, featuring light rays that illuminated a bank of clouds as the sun set over the ...