NASA announced that it _______ (open) the International Space Station to private individuals as soon as next year.

Virgin Galactic says hundreds of customers have signed _______ for a brief suborbital flight into space. (điền giới từ)

Yuri Gagarin _______ (become) the first person in space when he _______ (orbit) the Earth in a Vostok spacecraft on April 12,1961.

SpaceX _______ (send) three tourists on a 10-day trip to the ISS sometime in late 2025.

Nick was crazy _______ the universe after his visit to the Space Museum in Sweden. (điền giới từ)

Most people have wondered if there is life beyond Earth _______ space. (điền giới từ)

On 31 May he carried _______ checks on the Kibo JEM Robotic Manipulator System. (điền giới từ)

_______ (you/ ever/ wonder) what it would be like to live on the moon?

While she _______ (work) last week, the astronaut _______ (realize) that she _______ (need) a medium - size suit for spacewalking.

In 22 years, Columbia _______ (fly) 27 space flights before disaster _______ (strike) on the 28th mission.

Zero Gravity Corp, provides people _______ a once-in-a-lifetime experience of floating in microgravity _______ parabolic flights. (điền giới từ)

The centripetal force keeps the planets _______ (move) in their orbits.

Astronauts float _______ in space because there is no gravity in space. (điền giới từ)