NASA's Solar Dynamics Observatory has kept a continuous watch on the Sun. It has returned unprecedented images of solar flares, prominences, and the early stages of coronal mass ejections (CMEs).

The Cassini spacecraft has detected intense radio emissions from Saturn. They come from magnetic fields that thread the planet's the polar regions. They have been shifted into the range of human hearing and compressed in time.

NASA's Curiosity rover mission has found evidence a stream once flowed across the area on Mars where the rover is driving. There is earlier evidence for the presence of water on Mars, but this evidence -- images of rocks containing ancient streambed gravels -- is the first of its kind.

Saturn Cassini mission team members from NASA's Jet Propulsion Lab recount their observations of lightning bolts flashing in the outer regions of Saturn's atmosphere.

Scientists are tracking the path of energy rising from the Sun's core into violent solar tsunamis and outbursts called coronal mass ejections.

NASA's Cassini spacecraft has found possible ice volcanoes on Saturn's moon Titan that are similar in shape to those on Earth that spew molten rock.