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:opo0210d
Type:Observation
Release date:24 April 2002, 19:00
Size:1024 x 1024 px

About the Object

Name:Messier 4, NGC 6121
Type:• Milky Way : Star : Evolutionary Stage : White Dwarf
• Milky Way : Star : Grouping : Cluster : Globular
• X - Stars 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

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Large JPEG
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Screensize JPEG
371.5 KB

Wallpapers

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1280x1024
463.1 KB
1600x1200
586.4 KB
1920x1200
617.6 KB
2048x1536
805.6 KB

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