Quantcast
Wide-field view of the Andromeda Galaxy
135 of 1011

Wide-field view of the Andromeda Galaxy

June 5, 2012
This illustration shows the Milky Way galaxy's inner and outer halos. A halo is a spherical cloud of stars surrounding a galaxy. Astronomers have proposed that the Milky Way's halo is composed of two populations of stars. The age of the stars in the inner halo, according to measurements by the Paranal Observatory, is 11.5 billion years old. The measurements suggest the inner-halo stars are younger than the outer-halo population, some of which could be 13.5 billion years old. Object Name: Milky Way Image Type: Illustration Credit: NASA, ESA, and A. Feild (STScI)
Topics: Large-scale structure of the cosmos, Large-scale structure of the cosmos, Galactic astronomy, Galactic astronomy, Galactic astronomy, Spiral galaxies, Spiral galaxies, Spiral galaxies, Local Group, Local Group, Local Group, Local Group, Local Group, Astronomy, Astronomy, Stellar kinematics, Stellar kinematics, Stellar kinematics, Stellar kinematics, Stellar kinematics, Halo, Halo, Halo, Halo, Halo, Andromeda Galaxy, Andromeda Galaxy, Andromeda Galaxy, Andromeda Galaxy, Andromeda Galaxy, Galactic astronomy, Galactic astronomy, Galaxy formation and evolution, Galaxy formation and evolution, Galaxy formation and evolution, Galaxy formation and evolution, Galaxy formation and evolution, Galaxy, Galaxy, Galaxy, Galaxy, Galaxy, Milky Way, Milky Way, Milky Way, Milky Way, Milky Way, Spiral galaxies, Spiral galaxies


comments powered by Disqus