An unmanned spacecraft that was sent to rescue a falling NASA space telescope now needs an intervention of its own. NASA’s Neil Gehrels Swift Observatory was launched in 2004 to observe gamma-ray bursts,

For more than a decade, NASA’s Curiosity rover has been trudging up Mount Sharp, a 3-mile-tall (5-kilometer-tall) mountain at the center of the Gale Crater on Mars. Scientists believe lakes and streams covered the foothills of this peak billions of years ago, and Curiosity just found an abundance of evidence to support that hypothesis.