Earth Moon
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- THE END
- I understand your benefits but I still have a question...Don't you still have to rely on me to detect light? Wouldn't that mean that you can't collect that much light after all?
- Not really! Most telescopes now use digital detectors. We want to be able to look at images of the sky after the fact too! Think how people use cameras... I'll explain!
- And, to answer your question: the most important thing is that they are much much more sensitive to light than you!
- Astronomers nowadays use what we call Charged Coupled Devices to collect light!
- This means that they are more likely to capture light than you, so we see more things with them! Thanks to that, we can see many more 'types' of light! These 'types' are actually different lengths of a wave... but our scientist friend will explain that later!
- These devices detect light and allow astronomers to look at their observations after they perform them: just like cameras allow us to look at photos of the past!
- Why do you guys keep bullying me? You're all closer together but you've left me orbiting at a bigger distance. That's really mean! We are all Jupiter's Galilean moons after all!
- You're also just... so much older. Look at your surface, you're just full of craters, you have so many more than we do...
- I'll give it a try Io... You're just so different inside. You don't even have an iron core, you're just rock and ice. So boring! Anything to add Europa?
- Don't take it personally Callisto, you're just so... different. Ganymede can you explain to her?
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