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Physics Is a Conversation

Physicist Sean Carroll leads off this video with this line: I like to say that Einstein is, if anything, underrated as a physicist, which is hard to imagine given how highly he is rated. And then leads us through a history of modern physics and quantum mechanics that,

Why Mars astronauts need more than just space greenhouses

Thinking about food systems in deep space likely brings to mind something like The Martian where an astronaut is scratching barely enough food to survive out of potatoes grown in Martian regolith. Or perhaps a fancy hydroponic system on an interplanetary transport ship, with

Webb examines 'Exposed Cranium' nebula

Two heads are better than one in the latest images from NASA's James Webb Space Telescope, which reveal new detail in a mysterious, little-studied nebula surrounding a dying star. Nebula PMR 1 is a cloud of gas and dust that bears an uncanny resemblance to a brain in a

Trump hits Iran with new sanctions ahead of nuclear talks

The U.S. is imposing new sanctions on Iranian individuals, companies and ships accused of enabling the country’s illicit oil sales and ballistic missile programs as President Trump escalates pressure on Tehran over its nuclear program. The Treasury Department on Wednesday