Explanation:
A T Tauri variable star in formation
What does a star in formation look like? A typical example is the T Tauri variable star, located in the orange part at the center of the image. T Tauri stars are generally recognized as being very young—less than a few million years old. At this age, Sun-like stars are still in the early stages of their formation. Surrounding the T Tauri star is a yellow cosmic dust cloud named Hind’s Variable Nebula (NGC 1555/1554), which is a variable nebula. Infrared observations indicate that T Tauri itself is a multiple star system. In the molecular cloud at the edge, 400 light-years away, both the star and the nebula exhibit significantly different levels of brightness, adding a mysterious and fascinating quality to the scene. The captured area in the photo is approximately 400 light-years across.
NASA Website: http://antwrp.gsfc.nasa.gov/apod/astropix.html
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