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"We would need to consider the possibility that the source was created (or trapped as a primordial black hole) by a highly advanced technological civilization," Harvard's Avi Loeb writes.
The light that the NASA/ESA Hubble Space Telescope collected to create this image reached the telescope after a journey of ...
The bold question-askers at What If reveal how black holes bend light and allow us to peer into their mysterious depths.
A vast filament of gas stretching across the cosmos may help solve the mystery of the Universe’s missing matter. Astronomers have identified a massive filament of hot gas connecting four galaxy ...
"This work is a step toward understanding how quantum mechanics and gravity work together, a major unsolved problem in ...
NASA's James Webb Space Telescope recently zeroed in on the Bullet Cluster—delivering highly detailed images that show a ...
Predicted by Einstein and dismissed as undetectable, gravitational waves were finally heard in 2016. Now, with observatories ...