Credit & Copyright: Ken Crawford
(Rancho Del Sol Observatory)
Explanation:
This shock wave plows through space at over 500,000 kilometers per hour.
Moving right to left in the
beautifully
detailed
color composite, the thin, braided filaments are actually
long ripples in a sheet of glowing gas seen almost edge on.
Cataloged
as NGC 2736, its narrow appearance
suggests its popular name,
the Pencil Nebula.
About 5 light-years long and a mere 800 light-years away,
the Pencil Nebula is only a small part of the
Vela
supernova remnant.
The Vela remnant itself
is around 100 light-years in diameter, the expanding
debris
cloud of a star that was seen to
explode about 11,000 years ago.
Initially, the shock wave was moving at millions of kilometers
per hour but has slowed considerably, sweeping up
surrounding interstellar gas.
digg_url = 'http://apod.nasa.gov/apod/ap090108.html'; digg_skin = 'compact';
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:
supernova remnant - shock wave - остаток Сверхновой - ударные волны - туманность Карандаш
Публикации со словами: supernova remnant - shock wave - остаток Сверхновой - ударные волны - туманность Карандаш | |
См. также:
Все публикации на ту же тему >> |
Мнения читателей [4]