The Space Age

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Across
  1. 2. — The __ system: our Sun and everything gravitationally bound to it
  2. 4. — The __ Test Project: joint US-Soviet docking mission, 1975
  3. 7. — The __ telescope: repaired by astronauts in 1993
  4. 8. — First Space Shuttle to fly, mission STS-1, April 1981
  5. 10. — Leaving a spacecraft to work in open space: three letters
  6. 11. — Unmanned vehicle that roves across a planetary surface
  7. 12. — The programme that first landed humans on the Moon
  8. 13. — NASA programme that preceded Apollo; first US spacewalk
Down
  1. 1. — NASA's first human spaceflight programme, one astronaut
  2. 2. — Reusable winged spacecraft retired by NASA in 2011
  3. 3. — A probe that orbits a body rather than landing
  4. 5. — Soviet probe — first spacecraft to soft-land on the Moon
  5. 6. — Soviet cosmonaut and first human in space, 1961
  6. 8. — Mars rover exploring Gale Crater since landing in August 2012
  7. 9. — Elon Musk's commercial space company, founded 2002