Apparently, the decision has been made at NASA that supersonic heavy load parachutes just won’t work. So instead, a rocket to Mars will enter the Mars atmosphere at supersonic speeds using the shockwave from a blasting “retro” rocket to plow through the air instead of the old fashioned heat shield (“retro” here meaning opposite the direction of travel, not old fashioned)
Given this decision it’s interesting that SpaceX’s last booster reentry intentionally started it’s reentry burn high to simulate supersonic reentry burn conditions in the Mars atmosphere. And NASA mobilized special thermal cameras to record this experiment (that otherwise would’ve cost NASA hundreds of millions to test/simulate)
I like saying “Supersonic Retro-Propulsion”
This TED talk actually sounds sort of reasonable. Ie., not cold fusion. I like the sound name of the company: “General Fusion”.
The article Why is my WiFi slow? Why does my WiFi keep dropping out? addresses the technical issues of why WiFi sucks, but just treats the situation as given from G-d. It’s not. This is what happens when the mantra of “all government is bad” gets applied to the FCC. They do nothing and let an essential service develop in a way that’s not reliable.
And, by the way, because the article only covers current problems, it doesn’t talk about one of the bigger technical fiasco’s of the 20th/21st century, the woefully inadequate WEP encryption that was the WiFi standard for more than 10 years.
This reminds me of Bladerunner, Baraka, and Koyyanisqatsi. Both beautiful and haunting: