Credit & Copyright: ESO
Explanation:
What happens when a star runs out of
nuclear fuel?
For stars about the mass of our Sun, the center condenses into a
white dwarf
while the outer atmospheric layers are
expelled into space and appear as a
planetary nebula.
This particular
planetary nebula,
pictured above and designated
Shapley 1 after the famous astronomer
Harlow Shapley, has a very apparent annular ring
like structure.
Although some of
these nebulas
appear like planets on the sky
(hence their name), they actually surround stars far outside
our Solar System.
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:
Shapley 1 - planetary nebula - ring - Планетарная туманность - кольцевая туманность
Публикации со словами: Shapley 1 - planetary nebula - ring - Планетарная туманность - кольцевая туманность | |
См. также:
Все публикации на ту же тему >> |
Мнения читателей [5]