Phrase by 'Henry Spencer'
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Sure, there were hopes that Constellation's systems could later be adapted to support more ambitious goals. But Apollo had those hopes, too. It didn't work in 1970, and it wasn't going to work in 2020.
Author: Henry Spencer - Canadian ScientistMore , Goals , Work , Support
Supplying fuel for a Mars expedition from the lunar surface is often suggested, but it's hard to make it pay off - Moon bases are expensive, and just buying more rockets to launch fuel from Earth is relatively cheap.
Author: Henry Spencer - Canadian ScientistSpace , Earth , Hard , Moon
The communications delays between Earth and Mars can be half an hour or more, so the people on the ground can't participate minute by minute in Mars surface activities.
Author: Henry Spencer - Canadian ScientistMore , People , Earth , Ground
The Moon may not be quite as appealing as Mars, but it's still a complex and poorly understood world, with many questions still unanswered.
Author: Henry Spencer - Canadian ScientistWorld , Questions , Moon , Mars
In 1960-61, a small group of female pilots went through many of the same medical tests as the Mercury astronauts and scored very well on them - in fact, better than some of the astronauts did.
Author: Henry Spencer - Canadian ScientistBetter , Small , Group , Medical
NASA has never had a problem finding capable people to be astronauts. NASA's problem was, and still is, finding ways to cut the list of capable applicants down to a manageable length.
Author: Henry Spencer - Canadian ScientistPeople , Never , Down , Problem
Not until the space shuttle started flying did NASA concede that some astronauts didn't have to be fast-jet pilots. And at that point, sure enough, women started becoming astronauts.
Author: Henry Spencer - Canadian ScientistWomen , Space , Enough , Flying
Since SpaceX's very beginnings, they have talked about recovering and reusing at least the first stages of their rockets.
Author: Henry Spencer - Canadian ScientistAbout , First , Very , Beginnings
Solid-fuel rockets can't easily be shut down on command.
Author: Henry Spencer - Canadian ScientistDown , Command , Shut , Rockets
Whether solid rockets are more or less likely to fail than liquid-fuel rockets is debatable. More serious, though, is that when they do fail, it's usually violent and spectacular.
Author: Henry Spencer - Canadian ScientistMore , Serious , Space , Fail
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