As the 3rd of 4 full moons in a season, it'll be called a Blue Moon. The full moon instant - when the moon is most opposite the sun for this month - falls at 21:11 UTC on May 18. Read more.
Haumea orbits in Pluto's realm of the solar system. It's the most distant little world known to have a ring. Read more for new insights on how Haumea's ring maintains its nearly perfect circular shape.
A dizzying milestone …On Wednesday, NASA's Mars Reconnaissance Orbiter completed its 60,000th loop around the Red Planet. The craft has been orbiting Mars since 2006. It still sends back its own data and images and serves in a network of relays that beam data back to Earth from other Mars rovers and landers. Read more.
Meet Spica in the constellation Virgo, one of our sky's most fascinating stars. On Wednesday and Thursday, the moon is near Spica, which the only bright star in the large, rambling constellation Virgo the Maiden.Read more and find more charts.
