Spitzer Space Telescope Celebrates 5th Birthday

Spitzer Space Telescope Celebrates 5th Birthday 

 Star-forming region in the constellation Cassiopeia.

NASA’s Spitzer Space Telescope, the last of the space agency’s Great Observatories satellites to launch, celebrated its fifth birthday recently… giving me the opportunity to post this amazing multigenerational picture of star-forming region in the constellation Cassiopeia, 6,500 light-years from Earth. The photo takes in an area equivalent to four full moons and puts on show how one generation of massive stars can give birth to the next.

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