This free-floating rogue planet - untethered to any star - has a magnetic field millions of times more powerful than Earth's and auroras much more brilliant than our world's northern lights.
Red tides and a blue-green algae outbreak are fouling hundreds of miles of coast, killing fish and driving tourists from beaches. Some causes are natural, but human actions also play a role.
Peter Lowenstein in Mutare, Zimbabwe, caught Venus and the moon on Monday, above a flowering strelitzia - a plant native to South Africa - in his garden. More photos here.
