For several years, a satellite orbiting Mars has seen streaks flowing from Martian mountains during warm periods on the surface. Scientists have now confirmed that water is involved. NASA/JPL/University of Arizona hide caption

itoggle caption NASA/JPL/University of Arizona

An Oct. 8, 2014, photo shows the blood moon, created by the full moon passing into the shadow of Earth during a total lunar eclipse, as seen from Monterey Park, Calif. Sky-watchers will get a chance to see another "blood moon" eclipse on Sunday. Nick Ut/AP hide caption

itoggle caption Nick Ut/AP

The Occator crater on the dwarf planet Ceres holds bright spots that are unlike any other area on the planet's surface, NASA says. This image's resolution is around 450 feet per pixel. NASA/JPL-Caltech/UCLA/MPS/DLR/IDA hide caption

itoggle caption NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

Heyn, in action in Baltimore's Fells Point with that night's feature attraction: Jupiter's moons. Kevin and Sonia McCarthy/Courtesy of Herman Heyn hide caption

itoggle caption Kevin and Sonia McCarthy/Courtesy of Herman Heyn

Dwarf planet Ceres is seen in the asteroid belt between Mars and Jupiter, where it resides well away from Earth. NASA is hoping to quell online rumors that a massive near-Earth asteroid is due to hit us next month. NASA/Reuters/Landov hide caption

itoggle caption NASA/Reuters/Landov