Exact(58)
Why are some people critical of the orbital space plane?
What is a space plane, according to the article?
What is the purpose of an orbital space plane?
Its space plane design is a refinement of the HL-20.
There are doubts, though, about whether the new space plane will arrive soon enough.
A space plane, however, would not replace the shuttle altogether, he said.
To this end, Nasa should accelerate and expand its orbital space plane programme.
The crew exploration vehicle now replaces the orbital space plane in NASA's plans.
What does NASA expect the space plane to look like? 3. Divide students into small groups.
Mr. O'Keefe said the agency could still not estimate what the new space plane would cost.
Similar(1)
It would have been a three-stage space-plane, though only one stage would have made it into orbit.
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