Globular Cluster M4

Peering deep inside a cluster of several hundred thousand stars, the NASA/ESA Hubble Space Telescope uncovered the oldest burned-out stars in our Milky Way Galaxy. Located in the globular cluster M4, these small, dying stars - called white dwarfs - are giving astronomers a fresh reading on one of the biggest questions in astronomy: How old is the universe? The ancient white dwarfs in M4 are about 12 to 13 billion years old. After accounting for the time it took the cluster to form after the big bang, astronomers found that the age of the white dwarfs agrees with previous estimates for the universe's age.

Credit:

NASA/ESA and H. Richer

About the Image

NASA press release
NASA caption
Id:opo0210c
Type:Observation
Release date:24 April 2002, 19:00
Size:2084 x 2216 px

About the Object

Name:Messier 4, NGC 6121
Type:• Milky Way : Star : Grouping : Cluster : Globular
• X - Star Clusters Images/Videos
Distance:5500 light years

Colours & filters

BandWavelengthTelescope
Ultraviolet
U
336 nm Hubble Space Telescope
WFPC2
Optical
V
555 nm Hubble Space Telescope
WFPC2
Infrared
I
814 nm Hubble Space Telescope
WFPC2

Image Formats

Large JPEG
995.4 KB
Screensize JPEG
241.5 KB

Wallpapers

1024x768
242.1 KB
1280x1024
367.8 KB
1600x1200
503.3 KB

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