Lyra, or The Harp, a constellation in the Northern Hemisphere, between Hercules and Cygnus. In mythology, it represents the lyre of Orpheus or Mercury. The constellation's brightest star is Alpha Lyrae, or Vega, the fifth brightest star in the night sky as seen from the earth. Lyra contains a double-double star, Epsilon Lyrae, and a well-known planetary nebula, the Ring Nebula.
Hundred of meteors fly across the sky every night, but only a few make it to Earth. Meteors are best known for the brilliant streaks of light they make as they burn up in the atmosphere. Learn about 10 memorable meteor crashes that left an impression.
We know it's not made of green cheese, but what are the origins of the moon? Learn astronomers' theories about where the moon came from.