Credit & Copyright: Ken Crawford
(Rancho Del Sol Observatory)
Explanation:
Close to the Great Bear
(Ursa Major) and surrounded by the stars
of the
Hunting Dogs
(Canes Venatici), this celestial wonder was
discovered
in 1781 by the
metric
French astronomer
Pierre Mechain.
Later, it was added to the catalog of his friend and colleague
Charles Messier as
M106.
Modern deep telescopic views reveal it to be an
island universe --
a spiral galaxy around 30 thousand light-years across located
only about 21 million light-years beyond the stars of the Milky Way.
Along with a bright central core,
this
colorful composite image highlights
youthful blue star clusters and reddish stellar nurseries
tracing the galaxy's spiral arms.
It also shows remarkable reddish
jets of
glowing hydrogen gas.
In addition to small companion galaxy NGC 4248 near the picture's right edge,
background galaxies can be found scattered
throughout the frame.
M106 (aka NGC 4258) is a nearby example of the
Seyfert class of active galaxies,
seen across
the spectrum from radio to x-rays.
Active galaxies are believed to be powered
by matter falling into a massive
central black hole.
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.
|
Публикации с ключевыми словами:
spiral galaxy - M 106 - спиральная галактика - Сейфертовская галактика - Seyfert galaxy
Публикации со словами: spiral galaxy - M 106 - спиральная галактика - Сейфертовская галактика - Seyfert galaxy | |
См. также:
Все публикации на ту же тему >> | |
