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Landmark Achievement: 6 Astronomers from India Discover Giant Radio Galaxies (GRGs)

A team of 6 astronomers from India have reportedly discovered Giant Radio Galaxies (GRGs) which are the largest known galaxies in the universe

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Giant Radio Galaxies
Out of total known galaxies, only 300 have been classifies as Giant Radio Galaxies. Wikimedia
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  • Six astronomers from India have recently discovered the largest galaxies known to the universe, called Giant Radio Galaxies (GRGs)
  • Only 300 out of total number of galaxies are classified as Giang Radio Galaxies
  • The research was successful taking into account the research of last 6 decades of radio astronomy

July 06, 2017: A team of six astronomers from India has made a landmark discovery. Using the research from last six decades of radio astronomy and a 20-year-old survey, the team has detected the existence of Giant Radio Galaxies (GRGs).

Giant Radio Galaxies are known to be the largest galaxies in the universe. The reason for their large size is unknown as of now. As one of the lead researcher, Pratik Dabhade from Inter-University Centre for Astronomy and Astrophysics (IUCAA), explains in the study, “The huge size of GRGs has defied any theoretical explanation so far. Our work will help in understanding how these galaxies grow to be so large.”

The other researchers also involved include Joydeep Bagchi (IUCAA), Mamta Pommier (CNRS Observatoire de Lyon), Madhuri Gaikwad (Max Planck Institute Bonn), Shishir Sankhyayan (IISER Pune) and Somak Raychaudhary (IUCAA).

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Their research has been published in Journal Monthly Notices of the Royal Astronomical Society. The Giant Radio Galaxies are found co-existing with a supermassive black hole at the core of center of the nucleus. High energy particles are discharged at the speed of light which emerges into two giant radio lobes.

The Giant Radio Galaxies are known to be the last stage of evolution of galaxies, mainly because of their massive size. However, these galaxies are visible only through radio telescopes.

– by Saksham Narula of NewsGram. Twitter: @Saksham2394

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December’s Annual Geminid Meteor Shower Puts on a Show

The comet was first spotted in 1948 by U.S. astronomer Carl Wirtanen of Wisconsin.

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meteor shower
The Geminid meteor shower lights up the sky over the Mexican volcano Popocatepetl near the village of San Nicolas de los Ranchos in Puebla state, early on Dec. 14, 2004. The show for 2018 is peaking overnight on Dec. 13 and 14. VOA

Most years, December offers up a spectacular light show in the skies, known to astronomy enthusiasts as the Geminid meteor shower.

This year, the celestial show is set to peak overnight Thursday and Friday, followed on Sunday by a bonus close-up visit by 46P/Wirtanen, the brightest comet to be seen from Earth this year.

The comet will be visible to the naked eye when it flies by Sunday. According to Sky & Telescope magazine, it will also be among the 10 closest comet approaches to Earth since 1950 and the 20th-closest approach of a comet dating as far back as the ninth century.

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The comet was first spotted in 1948 by U.S. astronomer Carl Wirtanen of Wisconsin.

While the Perseid meteor shower in August is more well-known, astronomers said Geminid puts on a better show with the best display of shooting stars.

Geminid will be visible in both Northern and Southern hemispheres. (VOA)