Credits: NASA/JPL-Caltech
In this large celestial mosaic from Spitzer, there's a lot to see, including multiple clusters of stars born from the same dense clumps of gas and dust. Some of these clusters are older than others and more evolved, making this a generational stellar portrait.
The grand green-and-orange delta filling most of the image is a faraway nebula. The bright white region at its tip is illuminated by massive stars, and dust that has been heated by the stars' radiation creates the surrounding red glow.
Read more about this image here: https://www.jpl.nasa.gov/news/news.php?feature=7413
More information about Spitzer is available at the following site(s):
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