Senior Test: Galaxies

The Galactic halo contains only old stars.

• True

• False

The Galactic halo contains about as much gas and dust as the Galactic disk.

• True

• False

Evidence that suggests we live in a spiral galaxy include a band or disk of light across the night sky.

• True

• False

One difficulty in studying our own Galaxy in its entirety is that we live in it.

• True

• False

RR- Lyrae stars are a type of cataclysmic variable star used to determine distances to globular clusters & other galaxies.

• True

• False

Most of the mass of our Galaxy exists in the form of dark matter.

• True

• False

All discovered galaxies are incredibly far from our own galaxy and moving away from us.

• True

• False

It is possible to distinguish individual stars near the Galactic center.

• True

• False

The two main spiral galaxies that make up the Local Group are the Milky Way & Andromeda.

• True

• False

The closest galaxy to the Milky Way is Andromeda.

• True

• False