Across
- 4. a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth
- 6. way, a spiral shaped galaxy that contains several hundred billion stars, including our Sun
- 8. positioned in or relating to the sky, or outer space as observed in astronomy.
- 9. all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
- 10. a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity
Down
- 1. it is small, rocky object that orbit the Sun.
- 2. an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing.
- 3. having or representing the earth as the centre, as in former astronomical systems. Compare with heliocentric.
- 4. the envelope of gases surrounding the earth or another planet
- 5. an optical instrument that makes distant objects appear magnified by using an arrangement of lenses or curved mirrors and lenses
- 7. a huge collection of gas, dust, and billions of stars and their solar systems which is held by gravity.