Candidate most massive binary star identified

Astronomers have observed a binary star that potentially weighed 300 to 400 solar masses at birth. The present day total mass of the two stars is between 200 and 300 times that of the Sun, depending on its evolutionary stage, ...

The resilience of ray-finned fishes

Scientists from the University of Bristol have revealed that ray-finned fishes are perhaps one of Earth's most resilient groups of animals, having survived four mass extinction events that wiped out many other groups.

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