Astronomy Photo of the Day

Visit the NASA/JPL website to view more Astronomy Pictures of the Day NanoSail-D Illustration Credit: courtesy NASA Explanation: Featured in this artist's illustration, NASA's NanoSail-D finally unfurled a very thin, 10 square meter reflective sail on January 20th, becoming the first solar sail spacecraft in low Earth orbit. Often considered the stuff of science fiction, sailing through space was suggested 400 years ago by astronomer Johannes Kepler who observed ... Full Story