Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
A starburst galaxy, ablaze with stars in the process of forming, is devouring surrounding dwarf galaxies in a stunning new image from the Gemini North twin telescopes.
NGC 4449 stands out even for a starburst galaxy. Its star formation is widely distributed throughout its body rather than concentrated in a central region, as seen in most. This widespread, or"global," star birth in NGC 4449 is evidenced by the presence of the galaxy's youngest stars both in its heart and in streams of gas and dust threaded throughout the galaxy. , M. Rodriguez , T.A. Rector , M. Zamani )Contact me with news and offers from other Future brandsthat surround it.
As NGC 4449 absorbs smaller dwarf galaxy companions, tidal interactions send shockwaves through the galaxies' gas and compress it. This is seen as glowing red patches in the NGC 4449 image, which indicate the presence of hot ionized hydrogen, a telltale sign of
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