Chapter 27

stars and galaxies, phsc

The ecliptic

is the plane of Earth’s orbit

The Sun tends to bloat outward from nuclear fusion, and contract due to

gravity

In what region of the Sun is solar energy generated?

the inner core

With daytime temperatures that can reach 430°C, why is nighttime on Mercury so cold?

very little atmosphere, so heat is lost to space

The Large Magellanic Cloud is

a) an irregular galaxy colliding with the Milky Way galaxy.

b) an unusually bright planetary nebula.

c) a bright nebula within our galaxy.

d) the farthest known object visible to the naked eye in a clear nighttime sky.

a

Describe Mar’s amtosphere what what effect it has?

thin, cold

Describe a quasar in 3 words

energetic, disant, puzzling

Where is our solar system?

Milky way, spiral

The most common galaxy shape is

elliptical

In a museum collection you can likely see a

meteorite not meteoroid

continue 😇