On December 25, 2021, the most expensive telescope, James Webb Space Telescope (JWST) ever built was launched into space, traveled a few million miles away from the Earth, and settled at a Lagrange ...
Sagittarius A* (Sgr A*), the supermassive black hole at the center of our own galaxy, was discovered about 50 years ago as the closest supermassive black hole to us. “Until now, we didn't have the ...
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