Across
- 1. The imaginary circle on the celestial sphere that runs directly over an observer’s head and through the celestial poles.
- 5. The name for a day based on the rotation of the earth relative to the stars.
- 6. The high speed stream of particles beating against the outer layer of Earth’s atmosphere is called a solar_______.
- 9. Streams of dense gas erupting off the chromosphere and returning in a loop-like fashion are called solar ____.
- 10. Flame-like column of gas that continually erupt from the chromosphere is called ______flares.
- 12. The path the sun appears to follow across the celestial sphere.
- 13. The name of the first person in space.
Down
- 2. The name for large clouds of gas and dust in space.
- 3. The first type of reusable spacecraft was called a space ___.
- 4. The name of the United States first space station.
- 5. Tremendous bursts of energy probably caused by magnetic stress within the sun.
- 7. A _______ year is the distance light travels in one year.
- 8. The first name of the first person to set foot on the lunar surface.
- 9. The visible part of the sun.
- 11. A massive star system containing millions to billions of stars as well as gas and dust is called a ___?