Sun and Other Stars 5-ESS1-1

Absolute magnitude

The brightness of a star as seen from a distance of 10 parsecs. Absolute magnitude. Absolute magnitude is how bright a star really is when you're looking at it from the same distance away.

Apparent magnitude

The brightness of a star as seen from Earth. Apparent magnitude. It measures how bright a star looks to us from Earth.

Electromagnetic spectrum

All the wavelengths or frequencies of electromagnetic radiation. Electromagnetic spectrum. The electromagnetic spectrum is a range that shows all the types of light and radiation, like sunlight, microwaves, and X-rays.

Light year

The distance light travels in a year 9.5 trillion km. light year. A light year is how far light can travel in one year.

Observation

The process of using your senses to gather information. Observation. Observation is noticing details about things around you to learn more about them.

Star

A huge ball of very hot gases, like the Sun, is a star. A star is a big, bright ball in space that gives off heat and light.

Sun

A huge ball of very hot gases at the center of our solar system, it is a star. The sun is a big, burning ball of gas that provides light and heat to Earth.

Telescope

A device that makes distant objects appear closer. Telescope. A telescope is a tool that helps us see things that are far away, like stars and planets, by making them look bigger and clearer.