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Science Result: Surprisingly Young Nebula Hints at Formation of Stars in the Early Universe Astronomers are still trying to understand how stars and galaxies formed in the early universe. Now, scientists have new clues from a glowing nebula filled with clouds of hot gas and dust, known as RCW 120. Data from NASA’s Stratospheric Observatory for Infrared Astronomy, or SOFIA, suggest that this nebula may be representative of how stars formed in the early universe. Composite image of the nebula RCW 120. The ring-shaped clouds around the nebula were detected by the Spitzer Space Telescope. SOFIA measured the glowing gas shown in red and blue to study the nebula’s expansion speed and determine its age. The blue gas represents gas expanding in the direction toward Earth and the red away from Earth. The expansion is triggering the birth of stellar neighbors at breakneck speeds – and revealing the nebula is younger than previously believed. Credit: NASA/JPL-Caltech/SOFIA

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