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Electromagnetic Spectrum

Woman with Canadian flag near the ocean

Monitoring the Ocean with Radar

Learn about how a special type of radar helps monitor and protect Canada’s oceans.

C-band radar

Making Waves with Radar

Learn about how the radar works, the history and its many real life applications.


Strange Shapes in the Sky: Stealth and Flying Wings

Learn about how and why engineers designed and built some very unique aircraft.

The Jodrell Bank Lovell Telescope located in Cheshire, England

Telescopes and Astronomy

Visible light is only part of what astronomers study. They use different types of telescopes to study the entire electromagnetic spectrum.

Abstract light pattern

Light and Its Properties

Learn about light and its properties.

A pot of gold at the end of a rainbow

What's in a Rainbow?

Rainbows are beautiful examples of optics in nature. We see them thanks to the reflection and refraction of visible light and water.

Charging a cell phone

What If You Could Charge Your Phone Using Radio Waves?

Could we use radio waves to charge electrical technologies in the future?

Artist’s interpretation of astronaut in space

What are the Different Types of Radiation?

Learn about the different types of radiation, how they interact with atoms and how they can affect you.

The Parkes Observatory in New South Wales, Australia

The Search for Extraterrestrial Intelligence - and How You Can Help!

When astronomers search for extraterrestrial life, they often have to listen for radio waves coming from deep space. If you’re interested, you can help!

Lighting inside the Destiny Laboratory Module

Light on Earth and on the International Space Station

This backgrounder explains what light is, how it is measured, and how it affects people on Earth and astronauts on board the International Space Station.