“All the Light”– In the History of the Observable Universe

Galaxies in Milky Way

 

From our tiny blue dot, the universe appears inconceivably vast. In the grand cosmic scheme of things, all the light in the observable universe provides about as much illumination as a 60-watt bulb seen from 2.5 miles away, says Marco Ajello, an astrophysicist at Clemson University, who led a team in 2018 that has measured all of the starlight ever produced throughout the history of the observable universe.

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Weird Signal From The Sun –“Reveals Startling Mysteries”

Solar Flares

 

“All of these things are way more weird than anyone had predicted,” says astrophysicist John Beacom of the Ohio State University who with colleagues, led by astrophysicist Tim Linden, sifted nearly 10 years of observations from the Fermi Gamma-ray Space Telescope, a NASA observatory that scans the sky from its outpost in low-Earth orbit showing that the sun’s gamma rays do a number of weird things. “And that means the magnetic fields must be way more weird than anyone had thought.”

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