Using other wavelengths

1. Why does very little infra red from stars (apart from our sun) reach us here on Earth?

2. What space telescope did NASA send up to study infra red from stars and galaxies?

3. What kind of star would produce quite a lot of infra red but very little visible light?

4. What is the V.L.A.?

5. What is meant by the resolving power of a telescope?

6. What two things does it depend on?

7. Why do radio telescopes have very poor resolving power?

8. Suggest a large scale object that radio telescopes might study.

9. Name on object that emits a lot of x-rays.