Credit & Copyright: M. Bobrowsky,
NASA
Explanation:
This
Hubble Space Telescope snapshot shows Hen-1357,
the youngest known planetary nebula.
Graceful, gentle curves and symmetry
suggest
its popular name -
The
Stingray Nebula.
Observations in the 1970s detected no nebular material, but
this image from March 1996 clearly shows the Stingray's
emerging bubbles and rings of shocked and ionized gas.
The gas is energized by the hot central star as it nears the
end of its life, evolving toward a
final white dwarf phase.
The image also shows a companion star (at about 10 o'clock) within
the nebula.
Astronomers suspect that such companions
account for
the
complex shapes and rings of
this and many other planetary nebulae.
This cosmic infant is about 130 times the size of our own solar system
and growing.
It is 18,000 light-years distant, in the
southern constellation Ara.
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 |
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NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
Hen 1357 - Планетарная туманность - white dwarf - planetary nebula
Публикации со словами: Hen 1357 - Планетарная туманность - white dwarf - planetary nebula | |
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