Today’s materials have limited capacity to withstand heat, forcing aerospace engineers to design spacecraft like the space shuttle with blunt noses and wing edges. Such shapes allow a layer of compressed air to form above the surfaces as the craft reenters the atmosphere-lowering the heat load but also making the craft less aerodynamic. A new ceramic, developed at NASA’s Ames Research Center, might make possible spacecraft with sharper edges and pointed noses that slice through the air on their way to and from orbit. The ceramic withstands temperatures up to 2800 degrees C (today’s shuttle begins to sizzle at 1500 degrees). In a June test, fins made from the material will be attached to the nose of a Minuteman missile.
A Roomba recorded a woman on the toilet. How did screenshots end up on Facebook?
Robot vacuum companies say your images are safe, but a sprawling global supply chain for data from our devices creates risk.
A startup says it’s begun releasing particles into the atmosphere, in an effort to tweak the climate
Make Sunsets is already attempting to earn revenue for geoengineering, a move likely to provoke widespread criticism.
10 Breakthrough Technologies 2023
These exclusive satellite images show that Saudi Arabia’s sci-fi megacity is well underway
Weirdly, any recent work on The Line doesn’t show up on Google Maps. But we got the images anyway.
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