Space Exploration
How technology has shaped our understanding of space, and the challenges of exploring it.
9 questions, free, marked as you go with a worked explanation on every one.
What this covers
- space exploration
The questions
- How did the invention of the telescope change our understanding of the solar system?
- Which problems must be solved for humans to live in space? Select all that apply.
- Why are radio telescopes useful in addition to optical ones?
- What is an advantage of a space probe over a crewed mission?
- What is remote sensing?
- Which is a genuine issue arising from space technology?
- Radio signals travel at about 300 000 km per second. On a particular day a Mars rover is 78 000 000 km from Earth. How many seconds does a radio signal from the rover take to reach Earth?
- A satellite in low Earth orbit completes one full orbit every 90 minutes. How many complete orbits does it make in 24 hours?
- Use the table. A rock weighing 100 N on Earth is taken to each of these places. On which one would it weigh the least?