Credit & Copyright: The MAXIMA Collaboration,
NSF
Explanation:
No matter which direction you look,
no matter what type of light you see,
the sky glows - but why?
The sources of many of these
background radiations have remained long-standing puzzles,
but this millennial year brought some partial resolutions.
In X-ray light the recently launched spacecraft
Chandra and
XMM
resolved much of the seemingly uniform
X-ray background into many discrete sources, many of which appear to be
black holes at the centers of galaxies
accreting matter.
In
microwave light, the
BOOMERANG and
MAXIMA-1 missions
resolved with
new clarity
the seemingly uniform
microwave background.
The size and distribution of these
spots indicates a
geometrically flat universe,
which, when combined recent
supernovae results,
indicate a universe with an accelerating expansion rate
filled with
dark matter and
dark energy.
Pictured above, a map spanning ten degrees of the
microwave sky resolves the
microwave background
into hot and cold spots, as indicated in microkelvins.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
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Публикации с ключевыми словами:
cosmic microwave background radiation - фоновое излучение
Публикации со словами: cosmic microwave background radiation - фоновое излучение | |
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