APOD

1. The Magnetic Field of the Whirlpool Galaxy

   Do magnetic fields always flow along spiral arms?

   
   

2. A Lunar Corona with Jupiter and Saturn

   Why does a cloudy moon sometimes appear colorful?

   
   

3. The Medulla Nebula Supernova Remnant

   What powers this unusual nebula?

   
   

4. Jets from Unusual Galaxy Centaurus A

   The jets emanating from

   
   

5. The Mountains of NGC 2174

   The Mountains of NGC 2174