our solar system
Across
- 1. occurs when the moon crosses across the sun
- 3. the planet on which we live.
- 4. atoms so ordered that the material exhibits properties of magnetism
- 7. a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.
- 9. the envelope of gases surrounding the earth or another planet.
- 10. an artificial body placed in orbit around the earth
- 11. an electromagnetic wave of high energy and very short
Down
- 2. a brief eruption of intense high-energy radiation from the sun's surface
- 5. a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky
- 6. the basic unit of a chemical element.
- 8. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.