Explanation: The Horsehead Nebula is one of the most famous nebulae on the sky. It is visible as the black indentation to the red emission nebula seen just to the right of center of the above photograph. The bright star near the center is located in the belt of the familiar constellation of Orion. The horse-head feature is dark because it is really an opaque dust cloud which lies in front of the bright red emission nebula. Like clouds in Earth's atmosphere, this cosmic cloud has assumed a recognizable shape by chance. After many thousands of years, the internal motions of the cloud will alter its appearance. The emission nebula's red color is caused by electrons recombining with protons to form hydrogen atoms. Also visible in the picture are blue reflection nebulae, which preferentially reflect the blue light from nearby stars.

<<  Oktyabr'  >> Pn Vt Sr Cht Pt Sb Vs     1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31     1995   1996   1997 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

Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr'

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
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: nebula - Orion - Horsehead Nebula - Konskaya golova - Orion - pylevoe oblako - emissionnaya tumannost' Publikacii so slovami: nebula - Orion - Horsehead Nebula - Konskaya golova - Orion - pylevoe oblako - emissionnaya tumannost'
Sm. takzhe: Prizraki v Kassiopee Sem' Sester v pyli NGC 6727: tumannost' Buinyi Pavian Melott 15 v tumannosti Serdce Tumannost' Oriona i Konskaya Golova Tumannost' Tyul'pan i chernaya dyra Lebed' X-1 Triplet v Strel'ce Vse publikacii na tu zhe temu >>