| 1. | Another organization actively exploring reusable crewed suborbital spaceplanes is XCOR Aerospace.
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| 2. | All three launches occurred from plasma research experiments on suborbital trajectories.
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| 3. | He and his students finally launched a suborbital rocket in 1963.
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| 4. | Suborbital spaceflights could start in 2 { to three years.
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| 5. | Three more V-2 suborbital flights with monkeys followed.
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| 6. | Haas 2B is a single stage suborbital rocket intended for space tourism.
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| 7. | It can transport a crew capsule and service module into suborbital flight.
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| 8. | Two to four scales separate the suborbitals from the supralabials.
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| 9. | Grasshopper was an experimental technology-demonstrator, suborbital Texas test facility.
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| 10. | Another says it expects to be able to offer suborbital excursions by 2005.
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