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Geminga

British

/ dʒəˈmiːŋɡə, ɡɛˈmiːŋɡa /

noun

astronomy one of the brightest and nearest gamma-ray sources, situated in the constellation Gemini. A pulsar, it is believed to be a spinning neutron star

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Geminga

C20: from G _emini + gamma ray

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

If so, that’s a problem: Scientists think Geminga and Monogem produce a substantial amount of Earth’s overabundant positrons; they’re near enough and old enough for that to make sense.

From National Geographic

“If the interstellar medium is really as impenetrable to these particles as they’re saying, and Geminga and Monogem are both 250 or so parsecs away, the nearest supernova are at least that far away, and they would suffer from exactly the same problems.”

From National Geographic

The scientists focused on gamma rays originating from the vicinity of two nearby pulsars that could blast Earth with positrons—Geminga and PSR B0656+14, located some 815 and 950 light-years from Earth, respectively.

From Scientific American

To find out, Hooper’s team analysed gamma-rays emitted by the nearby Geminga pulsar and observed by HAWC.

From Science Magazine

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023