Deep Space and Beyond

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Across
  1. 4. (4) — The ___ Space Telescope: successor to Hubble for infrared
  2. 5. (7) — Point in a lunar orbit farthest from the Moon
  3. 7. (7) — Reusable rocket stage successfully landed by SpaceX from 2015
  4. 8. (10) — Propellant type that ignites spontaneously on contact with its oxidiser
  5. 10. (7) — First spacecraft to achieve a Jupiter flyby, 1973
  6. 13. (6) — Gravity ___: using a planet's orbital motion to accelerate a probe
  7. 14. (8) — Space Shuttle that broke apart during reentry in 2003
Down
  1. 1. (11) — Using atmospheric drag to slow a spacecraft without fuel
  2. 2. (10) — The boundary Voyager 1 crossed into interstellar space in 2012
  3. 3. (10) — Long-period wobble in Earth's axial orientation over 26,000 years
  4. 6. (6) — The ___ belt of icy objects beyond Neptune, containing Pluto
  5. 9. (6) — Country whose space agency launched the Mir station in 1986
  6. 11. (9) — Cosmic ___ radiation: heat echo of the Big Bang detected by C
  7. 12. (8) — The speed of a spacecraft relative to a reference point
  8. 15. (4) — Planet both Curiosity and Perseverance explore