The era of reionisation (artist’s impression)

Astronomers using ESO’s Very Large Telescope (VLT) have measured the distance to the most remote galaxy so far, UDFy-38135539, which we see as it was when the Universe was only about 600 million years old (a redshift of 8.6). At this early time, the Universe was not fully transparent and much of it was filled with a hydrogen fog that absorbed the fierce ultraviolet light from young galaxies. The period when the fog was still being cleared by this ultraviolet light is known as the era of reionisation, visualised in this artist’s impression. The glow from UDFy-38135539 seems not to be strong enough on its own to clear out the hydrogen fog. There must be other galaxies, probably fainter and less massive nearby companions of UDFy-38135539, which also helped make the space around the galaxy transparent.

Të drejtat:

ESO/L. Calçada

Rreth kësaj Videoje

Id:eso1041e
Data e Publikimit:Oct 20, 2010, 19:00 CEST
Publikime të ngjashme:eso1041
Kohëzgjatja:36 s
Frame rate:30 fps

Rreth objektit

Emri:UDFy-38135539
Tipi:Early Universe : Galaxy
Kategori:Cosmology

HD


Large

QT e madhe
5,8 MB

Medium

MPEG-1 Mesatar
10,7 MB
Flash Mesatar
6,2 MB

Small

QT e vogël
1,9 MB

For Broadcasters


Shih dhe