Tissue abnormalities found in oysters years after Deepwater Horizon oil spill

Astronomers spot the same supernova three times — and predict a fourth sighting in 16 years

Astronomers spot the same supernova 3x—and predict a 4th sighting in 16 years. An enormous amount of gravity from a cluster of distant galaxies causes space to curve so much that this "gravitational lensing" effect has astronomers to observe the same exploding star in three different places.

Solar 'Superflares' Rocked Earth Less Than 10,000 Years Ago--and Could Strike Again