Credit & Copyright: Anglo-Australian Telescope
Board
Explanation:
Spiral galaxy M66 is largest galaxy in the a group known as the Leo
Triplet.
M66
is somewhat peculiar because of its asymmetric spiral arms.
Usually dense waves of gas, dust, and newly formed stars - called spiral
density waves - circle
a galactic center and create a
symmetric galaxy. Gravity from nearby
Leo
Triplet neighbor M65, however, has probably distorted this galaxy. In M66,
intricate long dust lanes are seen intertwined with the bright stars that
light up the spiral arms.
Recent research indicates that
M66
is unusual in that older stars are thought to heat up the
dust in the
galaxy's
central bulge - a job attributed to
young and hot stars in many other galaxies.
M66 is famous for a powerful
"Type Ia" supernova that was observed in 1989. Stellar explosions like
this are thought nearly identical and so by noting how bright they appear,
astronomers can estimate their true distance - and therefore calibrate the
scale of the universe!
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 |
Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
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:
spiral'naya galaktika - Spiral'nye vetvi galaktik - baldzh, galakticheskii - Sverhnovye
Publikacii so slovami: spiral'naya galaktika - Spiral'nye vetvi galaktik - baldzh, galakticheskii - Sverhnovye | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> | |
