Andromeda Galaxy Halo Details - 4

Relying on the deepest visible-light images ever taken in space, astronomers using NASA's Hubble Space Telescope (HST) have reliably measured the age of the spherical halo of stars surrounding the neighboring Andromeda galaxy (M31). To their surprise, they have discovered that approximately one-third of the stars in Andromeda's halo formed only 6 to 8 billion years ago. That's a far cry from the 11-to-13 billion-year age of the stars in the Milky Way's halo.

Credit:

NASA, ESA and T.M. Brown (STScI)

About the Image

NASA press release
NASA caption
Id:opo0315f
Type:Observation
Release date:7 May 2003, 15:45
Size:751 x 751 px

About the Object

Name:Andromeda Galaxy, Messier 31, NGC 224
Type:• Local Universe : Galaxy : Type : Spiral
• Local Universe : Galaxy : Component : Halo
• X - Galaxies Images/Videos
Distance:2 million light years

Colours & filters

BandWavelengthTelescope
Optical
V
606 nm Hubble Space Telescope
ACS
Optical
Pseudogreen (V+I)
Hubble Space Telescope
ACS
Infrared
I
814 nm Hubble Space Telescope
ACS

Image Formats

Large JPEG
434.6 KB
Screensize JPEG
515.4 KB

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