Officials in Costa Rica and Panama are confiscating migrants’ passports and cellphones, denying them access to legal services ...
Astronomers have discovered an ultramassive black hole 36 billion times heavier than the Sun in the galaxy LRG 3-757. This ...
NASA’s Chandra X-ray Observatory and Hubble Space Telescope have been used to study a cluster of stars, nicknamed “Nikhuli," that may be acting as a black hole "delivery system." Credit: NASA/CXC/A. H ...
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