Whirlpool Galaxy
January 20

Whirlpool Galaxy

Observed in 2005

This stunning close-up image reveals intricate details within some of the winding spiral arms of the magnificent Whirlpool Galaxy. Tracing the graceful curves of the galaxy's arms are red-colored clouds of hydrogen gas—the raw material for star formation—which are actively giving birth to new stars in brilliant stellar nurseries. The spiral arms act as cosmic assembly lines, compressing gas and dust as they sweep through the galactic disk, triggering waves of star formation that light up the arms in vivid hues. Young, hot blue stars punctuate these red nebulae, their intense radiation ionizing the surrounding hydrogen and causing it to glow. This detailed view showcases the elegant structure and ongoing stellar genesis within one of the most photogenic galaxies in the sky, located approximately 23 million light-years away in the constellation Canes Venatici.

Image credit: NASA, ESA, Hubble Space Telescope