Credit & Copyright: First Light,
J. L. Dauvergne, P. Henarejos
Explanation:
How did the Eta Carinae star system create this unusual expanding nebula?
No one knows for sure.
About 170 years ago, the southern star system
Eta Carinae (Eta Car)
mysteriously became the second
brightest star system in the night sky.
Twenty years later, after ejecting more mass than our Sun, Eta Car unexpectedly faded.
Somehow, this outburst appears to have created the
Homunculus Nebula.
The three-frame video features images of the nebula taken by the
Hubble Space Telescope
in 1995, 2001, and 2008.
The Homonculus nebula's center is lit by light from a bright central star, while
the
surrounding regions are expanding lobes of gas laced with filaments of dark
dust.
Jets bisect the
lobes emanating from the central stars.
Expanding debris includes streaming
whiskers and
bow shocks caused by collisions with
previously existing material.
Eta Car still undergoes
unexpected outbursts,
and its high mass and volatility make it a candidate to explode in a
spectacular supernova
sometime in the next few million years.
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:
Eta Carinae - Эта Киля
Публикации со словами: Eta Carinae - Эта Киля | |
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