Across
- 3. a multiple or binary star may vary in brightness due to the __________of each of the individual stars
- 5. some _______stars expand and contract due to increases and decreases in energy
- 6. this type of telescope consists of a concave dish that collects radio waves into electrical signals
- 8. an open cluster containing hundreds of stars that seem to be traveling together
- 9. is what allows variable stars to expand and contract due to increases or decreases in this
Down
- 1. telescope that uses a dish-shaped or concave mirror to gather light from objects
- 2. the galactic bulge is where most of the________of the galaxy is concentrated
- 4. the Milky way according to many astronomers is a _______spiral galaxy
- 7. solar system located in the Orion Spur of the Sagittarius Arm. This is our solar system.
- 10. this type of telescope uses a lens to gather light from distant objects