Credit & Copyright: R. O'Dell and K. Handron
(Rice University),
NASA
Explanation:
While exploring the inner edge of the
Helix Nebula with the
Hubble Space Telescope's
Wide Field Planetary Camera 2,
astronomers were able to produce
this striking image - rich in details of an exotic environment.
This planetary nebula, created near the final phase of a sun-like
star's life, is composed of
tenuous shells of gas ejected by the
hot central star.
The atoms of gas, stripped of
electrons by
ultraviolet radiation from the central star,
radiate light at characteristic energies allowing specific
chemical elements to be identified.
In this image, emission from
nitrogen is represented as red,
hydrogen emission as green, and
oxygen as blue.
The inner edge of the
Helix Nebula, also known as NGC 7293, is in the direction toward
the central star, which is toward the bottom right.
Clearly visible near the inner edge are finger shaped
cometary knots.
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 2025 |
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:
Helix Nebula - planetary nebula - NGC 7293 - Туманность Улитка
Публикации со словами: Helix Nebula - planetary nebula - NGC 7293 - Туманность Улитка | |
См. также:
Все публикации на ту же тему >> | |
