Credit & Copyright: ESA,
Gaia,
DPAC;
Text:
Ata Sarajedini
(Florida Atlantic U.,
Astronomy Minute podcast)
Explanation:
Our sky is alive with the streams of stars.
The motions of 26 million
Milky Way stars are evident in the
featured map constructed from recent data taken by
ESA's
Gaia satellite.
Stars colored blue are
moving toward us, while red indicates away.
Lines depict the
motion of the stars across the sky.
The large blue on the left and red areas on the map's right give the overall impression
that stars in the Milky Way are
rotating around the center.
However, there is a region near the middle --
caused by our own
Sun's motion
relative to a rigidly-rotating central
Galactic bar -- that seems to reverse it.
Understanding details about the
motion of stars is
helping humanity to better understand the
complex history of our
Milky Way galaxy
and the origin of
our Sun.
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 |
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Publikacii s klyuchevymi slovami:
Milky Way - Mlechnyi Put' - zvezdnaya dinamika
Publikacii so slovami: Milky Way - Mlechnyi Put' - zvezdnaya dinamika | |
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