Astronomy

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Across
  1. 3. In 1801, this asteroid belt was discovered
  2. 5. Was discovered in 1919
  3. 7. Fedrick ___ successfully uses stellar parallax
  4. 8. In 1919 the ___ planet was discovered
  5. 11. Construction on ____ began in 1998
  6. 12. The first person to walk on the moon was Neil ____
  7. 14. Neil Armstrong was part of ____ 11
  8. 15. On August 25, 2012 _____ 1 entered interstellar space
  9. 16. Became the first person to orbit Earth
  10. 17. In 2012 astronomers received the first visual proof of a ___ hole
  11. 22. automated vehicle launched onto Mars in 2003
  12. 23. Using ____ fuel, the first rocket was launched
  13. 24. Launched to map the surface of Venus
  14. 25. automated vehicle launched onto Mars in 2011
Down
  1. 1. William Hershel discovered this planet
  2. 2. The first space shuttle launched in the 80s
  3. 4. The brightest star from Earth's point of view
  4. 6. The branch of science that deals with celestial objects, space, and the physical universe as a whole.
  5. 9. The flagship of NASA's Earth observing system
  6. 10. NASA launched _____ 1 into space on 10/11/1958
  7. 13. The Hubble space ____ launched in the 90s
  8. 18. automated vehicle launched onto Mars in 2004
  9. 19. The first space station in the United States
  10. 20. Constellation named after a hunter in Greek mythology
  11. 21. Sputnik 1 was launched into space by the ___