Huge jets erupt from the south pole of Saturn's moon Enceladus. Observations by NASA's Cassini spacecraft have revealed that the plumes are made of water vapor and suggest that the moon bears a subsurface ocean.
NASA's New Horizons spacecraft performed the first-ever flyby of Pluto on July 14, 2015. In honor of this landmark event's two-year anniversary, Space.com put together a gallery of incredible Pluto flyby photos.
The Rho Ophiuchi nebular complex is a beautiful, multicolored cloud of cosmic gas and dust and one of the closest stellar nurseries to the solar system. It's also one of the most-photographed objects in the night sky.