When NASA first started planning the Kepler mission, no one knew if the universe held any planets outside our solar system. Thousands of exoplanets later, the search enters a new phase.
The arcs you see at the center of this Hubble Space Telescope image are created by the light of distant galaxies, distorted to form what's called an "Einstein ring."
This chart shows the sky for around 9 to 10 p.m. local time (10 to 11 p.m. daylight time), when the constellation Hercules, and the 2 stars so essential for finding it, are well up in the northeastern to eastern sky.
