For the first time in 50 years, NASA is returning to the moon with four new astronauts, including the first woman and the first African American assigned to lunar exploration.
The United States is eyeing the possibility of building nuclear power plants that will be suitable on the moon and Mars. It released a request for ideas from the private sector on how to do that.
Less than a month after scientists discovered liquid methane waves on the Saturn moon of Titan, researchers, using NASA's Cassini spacecraft, have now discovered a body of liquid water under the icy surface of Saturn's other moon Enceladus.
The largest full moon of 2013 will appear in the sky this Sunday, Jun. 23. Skygazers with cloudy or obstructed views can tune into the live stream below.