wordpress counter


IT’S NOT JUST IN YOUR MIND!

Orion’s Horsehead Nebula, 1,500 years ago

One of the most identifiable nebulae in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud. Also known as Barnard 33, the unusual shape was first discovered on a photographic plate in the late 1800s.

The red glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead’s neck casts a shadow to the left. Streams of gas leaving the nebula are funneled by a strong magnetic field.

Bright spots in the Horsehead Nebula’s base are young stars just in the process of forming. Light takes about 1,500 years to reach us from the Horsehead Nebula. The above image was taken with the 0.9-meter telescope at Kitt Peak National Observatory.

SEE COMPLETE TEXT

Be Sociable, Share!




  • 'Substantial emptiness': Goodbye right and wrong, hello Caliphate
  • 'For unto you is born this day in the city of David a Saviour'
  • The cultural roots of our secularized society: What is Judaism?
  • 'Good-bye America'
  • 'Feel the fear': Youth push climate change
  • Time travel or prophecy? 'When he, the Spirit of truth, comes, he will guide you into all the truth'
  • Chairman Mao? Who knew?