Explanation: The bright blob of hydrogen gas cataloged as N88A is seen at the right. It measures a mere 3 light years across. Emerging from the cool, dusty interstellar medium in a nearby irregular galaxy known as the Small Magellanic Cloud, N88A hides hot young stars at its core. The false-color Hubble Space Telescope image was recorded in the characteristic "H-alpha" light emitted by hydrogen atoms as they are ionized by the young star's energetic ultraviolet light and then recombine. Other regions of ionized hydrogen (H II regions) which surround new born stars can be over a thousand light-years across but astronomers now recognize that these small ionized hydrogen blobs contain some of the most massive stars known.

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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: ionization - hydrogen - star formation - Maloe Magellanovo Oblako - molodye zvezdy - Ul'trafioletovoe izluchenie - oblasti ionizovannogo vodoroda - oblasti HII Publikacii so slovami: ionization - hydrogen - star formation - Maloe Magellanovo Oblako - molodye zvezdy - Ul'trafioletovoe izluchenie - oblasti ionizovannogo vodoroda - oblasti HII
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