Cosmology

Question 1

What is the longest baseline possible on Earth?

Answer 1

The diameter of the Earth’s orbit

Question 2

What is the spectral classification for star temperatures from hottest to coolest?

Answer 2

OBAFGKM

Question 3

How does a star’s absolute and apparent magnitude change when it is moved farther away?

Answer 3

The absolute magnitude stays the same and the apparent magnitude appears dimmer

Question 4

What is the closest star to our Sun?

Answer 4

Alpha Centauri or Proxima Centauri

Question 5

What 3 main factors determine the apparent magnitude of a star?

Answer 5

-size
-temperature
-distance

Question 6

What measurement of distance would we use for our nearest stars?

Answer 6

Light years

Question 7

What 2 types of electromagnetic radiation make it through Earth’s atmosphere undistorted?

Answer 7

-radio
-visible

Question 8

What are 3 shapes of galaxies?

Answer 8

-spiral
-elliptical
-irregular

Question 9

What does Quaser stand for?

Answer 9

Quasi Steller Radio Sources

Question 10

What type of star will our Sun become after it leaves the main sequence?

Answer 10

Red giant then white dwarf