Going, Going, Almost Gone

These three pictures illustrate how a nearby irregular galaxy brimming with star birth would appear at successively greater distances from Earth.

The pictures illustrate that less of the galaxy is seen at successively greater distances from Earth because the fainter stars are no longer visible.

This simulation demonstrates that astronomers may be missing most of the starlight from the farthest galaxies because it's too faint to see, even with the most powerful telescopes. The star birth they are detecting is just the 'tip of the iceberg.'

Credit:

Original: D. Hunter (Lowell Observ.) and A. Aloisi (JHU), Simulations: A. Fruchter and Z. Levay (STScI)

About the Image

NASA press release
NASA caption
Id:opo0202c
Type:Collage
Release date:8 January 2002, 20:00
Size:720 x 468 px

About the Object

Name:I Zw 18
Type:• Local Universe : Galaxy : Type : Irregular
• Local Universe : Galaxy : Size : Dwarf
• X - Galaxies Images/Videos
Distance:300 million light years

Colours & filters

BandTelescope
Optical Hubble Space Telescope
WFPC2

Image Formats

Large JPEG
36.5 KB
Screensize JPEG
67.6 KB

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