Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astronet.ru/db/xware/msg/1283409
Дата изменения: Mon Mar 25 13:17:26 2013
Дата индексирования: Sun Apr 10 12:53:15 2016
Кодировка:
Planck Maps the Microwave Background
Astronomy Picture of the Day
    


Planck Maps the Microwave Background
<< Yesterday 25.03.2013 Tomorrow >>
Planck Maps the Microwave Background
Credit & Copyright: European Space Agency, Planck Collaboration
Explanation: What is our universe made of? To help find out, ESA launched the Planck satellite to map, in unprecedented detail, slight temperature differences on the oldest surface known -- the background sky left billions of years ago when our universe first became transparent to light. Visible in all directions, this cosmic microwave background is a complex tapestry that could only show the hot and cold patterns observed were the universe to be composed of specific types of energy that evolved in specific ways. The results, reported last week, confirm again that most of our universe is mostly composed of mysterious and unfamiliar dark energy, and that even most of the remaining matter energy is strangely dark. Additionally, Planck data impressively peg the age of the universe at about 13.81 billion years, slightly older than that estimated by various other means including NASA's WMAP satellite, and the expansion rate at 67.3 (+/- 1.2) km/sec/Mpc, slightly lower than previous estimates. Some features of the above sky map remain unknown, such as why the temperature fluctuations seem to be slightly greater on one half of the sky than the other.

January
February
March
April
May
June
July
August
September
October
November
December
 < March 2013  >
Mo Tu We Th Fr Sa Su




123
45678910
11121314151617
18192021222324
25262728293031
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: CMBR - universe
Publications with words: CMBR - universe
See also:
All publications on this topic >>