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Book 18, Question 119 · Video

Why Do Scientists Put Giant Telescopes at the South Pole?

Video · 1:56 · Crafty Clover explains, from A Million Whys Book 18

The South Pole is a super place for telescopes! It is high, very cold, and extremely dry, so the air is clear and steady. And the ice itself can become part of the instrument.

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do scientists put giant telescopes at the South Pole?

The Big Idea

The South Pole is a super place for telescopes! It is high, very cold, and extremely dry, so the air is clear and steady. And the ice itself can become part of the instrument.

Clear Dry Air

Step one: clear, dry air. The South Pole sits high on the ice sheet, and the air is extremely cold and dry. Dry air lets faint light from space come through much better.

Microwave Light

Step two: catch faint light. Some telescopes there look for faint microwave light left over from the early universe. It has been traveling for billions of years.

IceCube

Step three: a detector buried in ice. IceCube is a huge detector that spots flashes made by tiny particles called neutrinos, which pass through the Earth. The clear ice itself is part of the instrument.

A Closer Look

Let's take a closer look! Big telescopes point at the dark sky. Dry, cold air makes the view clearer. Neutrinos are tiny particles that zip through almost everything. And IceCube catches their flashes deep in the ice.

Quick Facts

Quick facts! IceCube uses over 5,000 sensors spread through a cubic kilometer of ice. That is about a billion tons of ice! The sensors hang on long cables, deep in drilled holes. Cold, dry, and dark makes a great sky lab.

Think Like a Scientist

Now, think like a scientist! Draw a telescope pointing up from the snow, with stars above. Then add a long line of sensors going deep down into the ice. Label what each part does. Share what you discover with a grown-up.

Outro

The South Pole's clear, dry air and deep ice make a great science lab. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this