Stars and space

What are the three types of galaxies?

• spiral, oval, and elliptical

• spiral, oval, regular

• spiral, elliptical, irregular

• spiral, elliptical, regular

What is the shape of the Milky Way?

• irregular

• elliptical

• regular

• spiral

What object in the universe is the largest?

• star

• galaxy

• planet

• moon

The closest star to Earth is _______________________.

• in the Milky Way

• In a different galaxy

• the same size as our sun

What does a star's color tell us about a star?

• its size

• its shape

• its luminosity

• its temperature

What is luminosity?

• color

• star size

• brightness

• star shape

What can you observe about a star using a telescope on Earth?

• its exact temperature

• its absolute brightness

• its apparent magnitude

• its composition

Apparent magnitude is _______________________________.

• how bright a star looks from Earth

• a star's color

• how bright the star actually is

How many stars do scientists think are in the universe?

• trillions

• billions

• hundreds

• thousands

How many stars are in our solar system?

• trillions

• millions

• thousands

• one