---
title: "How Telescopes Work"
description: "Know that telescopes are instruments that help us see distant objects in space, and that space telescopes like Hubble and James Webb orbit above Earth’s atmosphere to get clearer views of the universe"
canonical: https://lightmysky.com/learn/science/how-telescopes-work-mt_-SZU6cVB_-
source: https://lightmysky.com/learn/science/how-telescopes-work-mt_-SZU6cVB_-.md
retrieved: 2026-10-19
---

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# How Telescopes Work

Know that telescopes are instruments that help us see distant objects in space, and that space telescopes like Hubble and James Webb orbit above Earth’s atmosphere to get clearer views of the universe

Subject: Science · Area: Space Exploration · Ages 7 to 9
Page: https://lightmysky.com/learn/science/how-telescopes-work-mt_-SZU6cVB_-

## Ready when they can

- Explain that a telescope magnifies distant objects so we can see them in more detail
- State that Earth's atmosphere blurs the view, so space telescopes get clearer pictures
- Name at least one space telescope (Hubble or James Webb) and describe what it does

## Lesson: How Telescopes Work

Stars, planets, and galaxies are so far away that they look like tiny dots, even on a clear night. A telescope is a tool that gathers light and makes faraway things look much bigger and closer, so we can see details our eyes alone would miss.

*(drawing: Light from a faraway star travels a long way. A telescope gathers that light, so the star looks much bigger and closer.)*

Here on Earth, we look up through a thick layer of moving air called the atmosphere. That air bends and shifts the light coming from space, so even a good telescope on the ground gets a slightly blurry view, like looking through rippling water.

**Example.** To get a clearer view, scientists built the Hubble Space Telescope and sent it into orbit far above the atmosphere. From up there, Hubble takes sharp, clear pictures of distant galaxies that telescopes on the ground could never capture.

**Tip.** The James Webb Space Telescope also orbits above the atmosphere. It uses special heat-sensing cameras to spot things too dim and too far away for our eyes, or even Hubble, to see.

**Recap.** Telescopes magnify faraway things, and space telescopes like Hubble and James Webb see the clearest because they orbit above Earth's blurry atmosphere.

## Practice

8 questions on this page, each with its working shown.

## Needs first

- [The Sun is a star](https://lightmysky.com/learn/science/the-sun-is-a-star-mt_u3Y3Tb-G_n)

## Opens up

- [Magnifiers, Microscopes and Telescopes](https://lightmysky.com/learn/science/magnifiers-microscopes-and-telescopes-mt_f30rUsqYkN)