Surprises from Mercury NASA's Messenger spacecraft has beamed back some surprising new data from the planet Mercury. Highlights include a weird crater nicknamed "the Spider," a planetary tail of hydrogen atoms, and measurements that show giant Caloris basin is even bigger than researchers thought. + Read More + Listen to Story + en español
New Lakes Discovered on Titan The Cassini spacecraft has discovered three new lakes near the south pole of Saturn's moon Titan. These strange bodies are filled not with water but liquid methane and ethane. Researchers are also studying a lake near Titan's north pole larger than Lake Superior. + Read More + Listen to Story + en español