Across
- 2. the outer white glowing area of the sun’s atmosphere
- 3. how we measure distance in space
- 5. this may form from material leftover from a supernova- small but dense
- 7. spirit and ___ are the names of the 2 rovers sent to Mars in 2003
- 8. this is the motion of objects against background stars, it Helps determine distance
- 11. he, in 1920 discovered that galaxies are moving away from Earth and each other
- 12. he, in the 1600’s found the true distance from Earth to the sun and Earth to Venus
- 13. the __ ___ ____ states that the universe formed in an instant in an enormous explosion
- 18. Russian to first orbit Earth
- 19. the average distance from Earth to the sun is ___ AU
- 20. beyond Neptune’s orbit in our solar system
- 21. these 2 probes 1 & 2 were sent in the 1970s to explore the outer planets
- 25. the name of the joint space station launched in the 90s
- 28. when large stars run out of fuel, within hours it blazes a million times brighter – this explosion is called this
- 30. the first space station made in the 1970s
- 32. this layer is the outer layer of the sun
- 33. when a star starts to run out of fuel it glows from leftover fuel, it is called this
- 36. the ____ brightness of a star is the brightness it would have if it were a standard distance from Earth
- 37. these telescopes use mirrors to collect light
- 39. flares gases/heat that erupt into space
- 41. very large stars may only last 10 ____ years
- 42. the inner layer of the sun
- 43. area between Mars and Jupiter
- 44. The universe is expanding and likely will _____
- 45. Massive stars when they die can become this- after a supernova explosion
- 46. a craft that carries scientific instrumentation to gather info
- 49. a large cloud of gas and dust containing an immense volume of material
- 50. what the first formation of planets were called as rock and dust were brought together with gravity
- 53. name of the re-usable rocket built in the 80s by the US
- 54. the distance of stars is measured in ____ ____
- 55. a ___ planet is an object that orbits the sun but does not have its own clear path
- 56. 99.85% of the mass of our solar system is the ____
Down
- 1. the densest part of the nebula- a contracting nebula pulling in to form this
- 4. waaaay beyond Neptune in our solar system, beyond the Kuiper belt
- 6. ___ stars last longer than ___ ones
- 9. our sun will last approximately 5 ____ more years
- 10. the inner layer of the sun’s atmosphere
- 14. the hottest stars are this color
- 15. this zone is the middle layer of the sun
- 16. huge loops of gases
- 17. the ___ of this indicates temperature of the star
- 22. These are made up of millions of stars
- 23. dog launched into space by the Russian in the 1950s
- 24. the ___ _____ of most stars are around 73% Hydrogen, 25 % Helium, 2%other
- 26. these are used to determine the types of elements in stars
- 27. ice, dust, rock moving around the sun in a large orbit that originates in the Oort cloud
- 29. the middle layer of the sun’s atmosphere
- 30. areas on the sun that are cooler
- 31. scientists belive the universe came into being ___ billion years ago
- 34. these telescopes use many lenses
- 35. spinning neutron stars
- 38. the sun has reactions called nuclear ____ that release heat and light
- 40. the ____ brightness of a star is how bright is seems from Earth
- 47. this space ship was the ones to carry astronauts to the moon
- 48. the name of our galaxy
- 51. this lunar module landed on mars with 3 US astronauts
- 52. wind electrical particles coming off the sun