Smithsonian Magazine23h
An Enormous, Branching String of Galaxy Clusters Is the Largest Known Structure in the Universe, Scientists Say
The cosmic superstructure Quipu is more than 13,000 times the length of the Milky Way, and its mass is 200 quadrillion times ...
Is Purple People Bridge's future at risk? City runs out of money to maintain it
Originally a railroad bridge opened in 1872, it was converted in the early 2000s using $4 million in state funds initially ...
Earth grew an extra, never-before-seen 'radiation belt' after last year's supercharged solar storm — and it's probably still there
Data collected from a once-defunct NASA satellite show that Earth grew two extra radiation belts following a supercharged ...