APOD

1. Filaments of the Cygnus Loop

   What lies at the edge of an expanding supernova?

   
   

2. Lightning over Colorado

   Have you ever watched a lightning storm in awe?

   
   

3. Moon Pairs and the Synodic Month

   Moon Pairs and the Synodic Month

   
   

4. Moon over Andromeda

   Moon over Andromeda

   
   

5. Enceladus in Infrared

   Enceladus in Infrared