X-Ray Astronomy
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Is dark matter lighting up the sky with X-rays?
Eighty-five percent of the mass in our Universe is the mysterious substance named dark matter. Besides giving it a name, however, we know little else about it. How can we claim we know dark matter exists if we can't even see it? Through gravity. Just... click to read more
Views 3520
Reading time 4 min
published on Mar 2, 2021
Digging up a dinosaur in a galaxy cluster
Galaxy clusters are the biggest gravitationally-bound objects in the Universe, millions of light years across, some as massive as a quadrillion (10^15) suns. They contain thousands of galaxies and are filled with 100-million-degree plasma, so tenuous it is a million times less dense than the... click to read more
Views 3877
Reading time 4 min
published on Dec 17, 2020
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