PIA07144: Fires of Galactic Youth (Artist Animation)
Mission: Galaxy Evolution Explorer (GALEX)
Spacecraft: GALEX Orbiter
Instrument: GALEX Telescope
Product Size: 587 x 473 pixels (width x height)
Produced By: California Institute of Technology
Full-Res TIFF: PIA07144.tif (834.1 kB)
Full-Res JPEG: PIA07144.jpg (35.86 kB)

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figure 1 for PIA07144
Figure 1

This artist's animation shows a typical young galaxy, teeming with hot, newborn stars and exploding supernovas. The supernovas are seen as white flashes of light.

NASA's Galaxy Evolution Explorer spotted three-dozen young galaxies like the one shown here in our corner of the universe. It was able to see them with the help of its highly sensitive ultraviolet detectors. Because newborn stars radiate ultraviolet light, young galaxies light up brilliantly when viewed in ultraviolet wavelengths. The findings came as a surprise, because astronomers had thought that the universe's "birth-rate" had declined, and that massive galaxies were no longer forming.

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