Credit & Copyright: Marcelo Salemme
Explanation:
They're like mountain peaks, but they are forming stars.
Bright-rimmed, flowing shapes gather near the center of
this rich starfield toward the borders of the nautical southern
constellations Puppis and Vela.
Composed of interstellar gas and
dust, the grouping of
light-year sized cometary globules is about 1300
light-years distant.
Energetic ultraviolet light from nearby hot stars
has molded the globules
and ionized their bright rims.
The globules also
stream away from the
Vela supernova remnant which
may have influenced their swept-back shapes.
Within them, cores of cold gas and
dust are likely
collapsing to form
low mass stars whose formation will ultimately cause the
globules to disperse.
In fact, cometary globule CG 30 (upper right in the group) sports a
small reddish glow inside its head,
a telltale sign of energetic jets from a
star
in the early stages
of formation.
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 2026 |
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.
Based on Astronomy Picture
Of the Day
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