Credit & Copyright: László Francsics
Explanation:
Near the center of this
sharp cosmic portrait, at
the heart of the
Orion Nebula, are four hot, massive stars
known as
the Trapezium.
Tightly gathered within a region about 1.5 light-years in radius,
they dominate the core of the dense Orion Nebula Star Cluster.
Ultraviolet ionizing radiation from the Trapezium stars,
mostly from the brightest star
Theta-1
Orionis C
powers the complex star forming region's entire visible glow.
About three million years old, the Orion Nebula Cluster was
even more compact in its younger years and a
dynamical study
indicates that
runaway stellar collisions
at an earlier age may have formed a black hole
with more than 100 times the mass of the Sun.
The presence of a black hole within the cluster
could explain the observed high velocities of the Trapezium stars.
The Orion Nebula's distance of some 1,500 light-years
would make it the closest known black hole to planet Earth.
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 |
Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Publikacii s klyuchevymi slovami:
M 42 - Orion Nebula - black hole - Trapeciya Oriona - Tumannost' Oriona - chernye dyry
Publikacii so slovami: M 42 - Orion Nebula - black hole - Trapeciya Oriona - Tumannost' Oriona - chernye dyry | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> | |
