The class gathered around a large cylinder-shaped object with a mirror-like surface and complex instruments attached to its sides. A screen nearby showed stunning images of colorful galaxies and glowing nebulas.
"This is a model of a space telescope," Alex said. "Unlike telescopes on Earth, space telescopes orbit high above our planet's atmosphere, where they can take crystal-clear pictures of distant stars and galaxies."
"How do scientists fix it if something breaks?" Tim wondered.
"Sometimes astronauts have to go on special repair missions," Alex answered. "They wear their spacesuits and float in space while making repairs. It's like doing a puzzle while swimming, except in space!"
1. What shape was the space telescope?
2. Why are space telescopes put above Earth's atmosphere?
3. How do astronauts fix the space telescope?
4. What did Alex compare repairing the telescope to?