Five years until the first probe hardly seems like a breakneck pace, but I take this more seriously than I do China. I suspect that the next president, whoever it is, will have to make some serious choices about US plans.
SpaceX on Oct. 16 said it had changed its return-to-flight plans and would first launch 11 small Orbcomm messaging satellites into low Earth orbit, and then test reignition of the redesigned second-stage engine during the same flight before launching SES’s heavier telecommunications satellite into higher orbit, a mission that will need the reignition capability.
Luxembourg-based SES said the company was comfortable with ceding its slot to Rochelle Park, New Jersey-based Orbcomm, especially since SpaceX has said it can launch the SES-9 telecommunications satellite into geostationary orbit in late December.
So December may be an interesting month, with two landing attempts.
This whole debate assumes that the only purpose of space exploration is science. But if we want to settle space, we have to accept the fact that we are going to “contaminate” it with earthly life.
The volunteers also slept continuously. They would toss and turn like everyone does, but they almost never woke up for a concerted window in the middle of the night. This contradicts a growing idea, popularized by historian Roger Ekirch, that sleeping in eight-hour chunks is a modern affectation.
Ekirch combed through centuries of Western literature and documents to show that Europeans used to sleep in two segments, separated by an hour or two of wakefulness. Siegel doesn’t dispute Ekirch’s analysis; he just thinks that the old two-block pattern was preceded by an even older single-block one. “The two-sleep pattern was probably due to humans migrating so far from the equator that they had long dark periods,” he says. “The long nights caused this pathological sleep pattern and the advent of electric lights and heating restored the primal one.”
Interesting. Also some good advice for better sleep.
I don’t know, it still seems like you’ll expend more energy by standing than sitting. But now I don’t feel as bad that I’ve never gotten around to getting/making one.