Astronomy

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Across
  1. 2. a region of spacetime where gravity is so strong that no particles or even electromagnetic radiation such as light can escape from it.
  2. 5. One of Jupiter's four biggest moons.
  3. 7. all of space and time and their contents. It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of energy and matter.
  4. 9. the English composer who wrote the suite “The Planets”
  5. 11. How many light years between the sun and proxima centauri?
  6. 12. A celestial body that is in orbit around a star; it has enough mass for its gravity to create a round shape; and it has cleared its neighborhood of smaller objects.
  7. 15. How many planets are in our solar system?
  8. 17. What is the nearest star to the sun?
  9. 19. Named after the Roman god of agriculture and harvest.
  10. 20. One of Jupiter's four biggest moons.
  11. 21. how many millions of light years is the andromeda from the milkyway?
  12. 23. the nearest galaxy from the milkyway
  13. 24. The planet named after the ancient Greek deity of the sky.
  14. 27. Named after the king of the Roman gods and heavens (also king of thunder).
  15. 31. One of Jupiter's four biggest moons.
  16. 32. A a giant ball of hot gas, mostly composed of hydrogen and helium. Every one has its own life cycle, ranging from a few million to trillions of years, and its properties change as it ages.
  17. 33. What is the approximate distance between the earth and sun im millions of km?
  18. 34. What is our galaxy called?
  19. 36. An object in space that orbits or circles around a bigger object. There are two kinds of satellites: natural or artificial.
  20. 37. The link between James Webb and Edwin Hubble.
Down
  1. 1. A huge collection of gas, dust, and billions of stars and their solar systems. It is held together by gravity.
  2. 3. a boundary in spacetime beyond which events cannot affect an outside observer. Its the point at which the gravitational pull becomes so great that escape is impossible.
  3. 4. a celestial object composed of a nucleus of ice and rock and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
  4. 6. how many light years wide is the milky way
  5. 8. not an actual object, but the phenomenon of a meteoroid entering our atmosphere and burning up.
  6. 9. The force that keeps our moon in orbit around the Earth.
  7. 10. An assemblage consisting of a star and bodies orbiting around it: planets, moons, asteroids, comets and other icy bodies.
  8. 13. a small, rocky object that orbits the sun. They are similar to planets but much smaller in size.
  9. 14. Approximately how many billions of stars are in the Milky way?
  10. 16. Named after the Roman god of commerce, travel and thievery.
  11. 18. also known as natural satellites, they are celestial bodies that orbit planets or dwarf planets.
  12. 22. One of Jupiter's four biggest moons.
  13. 25. What is the star in our solar system called?
  14. 26. Named after the Roman goddess of love and beauty.
  15. 28. how many trillion km is proxima centauri from the sun?
  16. 29. a mission developed by NASA that aims to conduct detailed reconnaissance of Jupiter’s moon Europa’s ice shell and subsurface ocean, thereby improving our understanding of this moon.
  17. 30. the distance that light travels in one year, which is approximately 9.46 trillion kilometres.
  18. 34. what are the initials of the planets in our solar system to make a mnemonic?
  19. 35. Named after the Roman god of war.