A Quote by Stephen Hawking
A zero-gravity flight is a first step toward space travel.
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The reason space missions need artificial gravity is clear: humans simply did not evolve to live in zero gravity.
I've used the Phoenix Centrifuge to replicate what the body's going to go through on the flight up. I've also done some gravity tests with ZERO-G [a charter-flight service in Arlington, Va., that uses modified Boeing 727s to simulate weightlessness], which went great.
Space and spacecraft and zero gravity and so forth are very difficult to render.
Birth control is the first important step woman must take toward the goal of her freedom. It is the first step she must take to be man's equal. It is the first step they must both take toward human emancipation.
Real space movies have to involve zero gravity and a world without up or down.
Life as an astronaut in space is a very interesting one. There are things we all take for granted here on earth, like gravity, that can make things a bit challenging. One of the fun things about getting here is the zero gravity and floating around. But it also makes things very difficult.
To exercise no-thought and rest in nothing is the first step toward resting in Tao. To start from nowhere and follow no road is the first step toward attaining Tao.
I'm happy here on the surface of the earth. If space travel ever got to be as simple as jet travel today, yeah, I'd take a jet flight to the moon.
Were not cutting the budget simply for the sake of sounder financial management. This is only a first step toward returning power to the states and communities, only a first step toward reordering the relationship between citizen and government.
Having the opportunity to fly the first flight of something like a space shuttle was the ultimate test flight.
The Americans are still the leaders in human space flight. I feel we have a danger here of kind of stagnating. We're kind of resting on our laurels and there's a danger going forward if we don't take bold steps to really support human space flight in this country that we could fall behind. After the space shuttle is retired, we're going to have a big gap, five to seven years, at least where we're not going to have the ability to send our own astronauts into space, we'll have to buy rides on the Russian Soyuz, and so that will be a pretty big step down for us.
I have found that you have only to take that one step toward the gods, and they will then take ten steps toward you. That step, the heroic first step of the journey, is out of, or over the edge of, your boundaries, and it often must be taken before you know that you will.
The United States, Russia, and China are the only three countries in the world that can launch astronauts into space. Mostly in the U.S. you see some companies trying to launch private commercial people into space, but nobody's done it yet. The only private vehicle that's made it into space so far is Spaceship 1 in 2004, and that was an effort that was funded by one of the Microsoft founders, and he spent about $20 million to develop this spacecraft to do a sub-orbital flight. And it's not the same as going into orbit, but it was a huge first step.
The first step toward greatness is to be honest, says the proverb; but the proverb fails to state the case strong enough. Honesty is not only "the first step toward greatness," - it is greatness itself.
Designing a station with artificial gravity would undoubtedly be a daunting task. Space agencies would have to re-examine many reliable technologies under the light of the new forces these tools would have to endure. Space flight would have to take several steps back before moving forward again.
Other anatomical changes associated with long-duration space flight are definitely negative: the immune system weakens, the heart shrinks because it doesn't have to strain against gravity, eyesight tends to degrade, sometimes markedly (no one's exactly sure why yet). The spine lengthens as the little sacs of fluid between the vertebrae expand, and bone mass decreases as the body sheds calcium. Without gravity, we don't need muscle and bone mass to support our own weight, which is what makes life in space so much fun but also so inherently bad for the human body, long-term.
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