Unit 10 The Telescope

G: Come and look at the telescope I got for my birthday.

B: That's neat!

G: Yeah, now we can look at the moon.

Did you know that the moon is the Earth's only natural satellite? B: No, I didn't know that.

I thought the moon was a planet. G: Well, a planet moves around the sun, but a satellite moves around a planet.

B: Oh, I see.

Can you see other planets with your telescope? G: Sure, I can see two planets close to Earth really well.

B: Which planet is closest to Earth?

G: Mars is the closest planet to Earth.

Many scientists believe that Mars once had rivers and oceans just like Earth. Mars has two moons. B: That's cool!

What is the other planet near Earth? G: The other planet near Earth is Venus, but Venus has no moons.

B: Do you think people will ever be able to visit Mars or Venus?

G: Maybe someday people will be able to visit Mars, but not Venus because it's too hot.

B: Well, at least we can see them with your new telescope!