Astronomy › Section F · Astronomical instruments › Topic F.4
Radio telescopes
Radio waves from space pass easily through our atmosphere and reveal cold gas, exploding stars and the surroundings of black holes. Because their waves are so long, radio astronomers link dishes across whole continents to see fine detail.
In this topic
- Static from the Milky Way
- Radio waves are light, not sound
- Dishes and the world's largest
- The resolution problem
- Worked example: a giant dish's blurry view
- Interferometry
- Arrays across a desert
- Worked example: from one dish to Earth-sized
- Light interferometers and radar
- Common mistakes to avoid
- Key takeaways
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