Across
- 3. the bending and spreading of waves as they pass around obstacles or through narrow openings
- 5. an astronomical object with a gravitational field so intense that nothing, not even light, can escape it
- 7. a hole or opening in an optical instrument that light passes through
- 8. apparent curving of the Earth's surface, caused by Earth's rotation
- 9. colossal explosion of a star
Down
- 1. a professionally trained individual who goes to space to conduct research for scientific purposes
- 2. massive, luminous sphere of plasma
- 3. when these animals roamed the land, earth was on the other side of the galaxy!
- 4. a large celestial body that orbits a star. It is massive enough for its own gravity to shape it into a sphere
- 6. an area of celestial sphere where an area of stars form a recognisable, visible pattern
- 7. a small, rocky celestial body that orbits the earth