NASA's planet-hunter TESS makes first discoveries

Photos: Cool unmanned space missions
Two new missions to Venus -- DAVINCI+ and VERITAS -- have been selected by NASA. These missions will shed light on how Venus became the inhospitable world it is today, despite the fact that it shares many characteristics with Earth.
Hide Caption
1 of 22

Photos: Cool unmanned space missions
This illustration shows the position of NASA's Voyager 1 and Voyager 2 probes outside the heliosphere, a protective bubble created by the sun that extends well past the orbit of Pluto.
Hide Caption
2 of 22

Photos: Cool unmanned space missions
SPHEREx, the Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer, will study the beginning and evolution of the universe and determine how common the ingredients for life are within the planetary systems found in our galaxy, the Milky Way. It is targeted to launch in 2024.
Hide Caption
3 of 22
