Credit & Copyright: Johan B. Monell
Explanation:
Globular clusters once ruled the
Milky Way.
Back in the old days, back when our Galaxy first formed,
perhaps thousands of globular clusters roamed
our Galaxy.
Today, there are less than 200 left.
Over the eons,
many globular clusters were destroyed by repeated fateful encounters with each other
or the Galactic center.
Surviving relics are older than any
Earth fossil,
older than any other structures in our Galaxy,
and limit the universe itself in raw age.
There are few, if any,
young globular clusters in our
Milky Way Galaxy because
conditions are not ripe for more to form.
The featured video shows what it might
look like to go from the Earth to the globular cluster
Terzan 5,
ending with
a picture
of the cluster taken with the
Hubble Space Telescope.
This star cluster was
recently
found to contain not only stars formed in the early days of our
Milky Way Galaxy,
but also,
quite surprisingly,
others that formed in a separate burst of star formation about 7 billion years later.
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:
globular cluster - Sharovoe skoplenie
Publikacii so slovami: globular cluster - Sharovoe skoplenie | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> | |
