The light from KIC 8462852 faded again, and scientists have some new theories about what’s behind astronomy’s most mysterious star.
Imagine you were asked to invent something new. It could be whatever you want, made from anything you choose, in any shape or size. That kind of creative freedom sounds so liberating, doesn’t it? Or … does it? if you’re like most people you’d probably be paralyzed by this task. Why? Brandon Rodriguez explains how creative constraints actually help drive discovery and innovation.
This video is about why it’s harder to successfully land spacecraft and landers and rovers on Mars than on Earth, or Venus, or the Moon, or Titan, or asteroids. It all comes down to atmospheric density! When there’s no atmosphere, you can do a powered descent in a flimsy tinfoil spacecraft like the Lunar Module, and when there’s plenty of atmosphere you can do an unpowered descent via heat shield and parachutes like the space shuttle, Apollo command module, Soyuz, Huygens, etc. But on Mars with its thin air, you have to do both powered & unpowered descent, getting the worst of both worlds.
The philosophy of Kurzgesagt.
The Solar System hasn’t been the same since Pluto was downgraded from a planet to a dwarf planet, and all bets have been off since this monumental decision. Case in point, last year, scientists at the California Institute of Technology proposed that there might be a true Planet Nine in our solar system. The team asserted that it appears to be 10 times the mass of Earth and that it is hiding out in the remote recesses of our solar system—well beyond the orbit of Pluto.
More than 18,300 candidates applied to be astronauts in NASA’s latest class—smashing the record of 8,000 applicants in 1978—and only 12 got the job. Here’s who made the cut.