Stars and Star Brightness-Mystery 8

Through a telescope, we can see thousands of stars. Why is it so difficult to see if there are planets going around these stars?

• They are too bright and it makes if difficult to see.

• The planet are too small to see.

• The planets are too far away to see.

If a planet has a temperature of 100 degrees Celsius, the water will

• freeze

• be perfect

• boil away

Planets outside of our solar system are called

• outside planets

• exoplanets

• lago planets

The term scientists use to describe the zone where temperature is just right for life is called

• the Star Wars Zone

• the Goldilocks Zone

• the Cinderella Zone

What is the name of the closest star to Earth?

• sun

• sirius

• vega

How many planets in our solar system have an atmosphere like the one on Earth?

• 2

• 1

• 0

How can scientists know if there are planets orbiting stars in other solar systems?

• They look at a star in a telescope and then look for the planets and then look for planets going around it.

• They use computers to measure star size because large stars always have planets.

• They use computers to measure changes in star brightness.

About how many planets have been discovered outside of our solar system?

• 4,000

• 2,000

• 1,000

Plants that receive 85% of the light they receive on Earth will

• probably be ok.

• will die because there is too much light.

• will die because there is not enough light.

If we traveled to another solar system, what would our sun look like?

• a planet

• an asteroid

• another star