# Activity: Alphabetical

## Agent Exoplanet

05 Apr 2012

Have you ever wondered how astronomers discover planets orbiting stars outside our solar system? This activity takes you through the steps astronomers use when they study extrasolar planet transits.

## Asteroids, Comets and NEOs - student worksheet

16 Nov 2009
This worksheet is based around the topic of asteroids, comets, NEOs and impacts and aims to help you learn about these objects in the Solar System. The worksheet can be downloaded and printed out for use in the classroom or at home.

## Craters in the classroom

18 Nov 2009
In this activity, students will create impact craters using objects of differing densities and sizes. Students will note and compare the shape and extent of the resulting ejecta rays and draw conclusions about how the mass, shape, velocity, and angle of impactors affects the size and shape of the crater, which they will relate to the nature of impact craters on Earth and the Moon.

## Create a Hubble Tuning Fork diagram

28 Mar 2008
In the 1920's an astronomer named Edwin Hubble realised there are different types of galaxies and began to classifying them according to their appearance, creating the famous ʻtuning fork diagram'. In this activity you will make colour images of galaxies using real data files and learn how to classify them for yourself. Finally, you can add them to the tuning fork template and recreate the famous Hubble image!

## Distances in the Solar System

28 Jan 2011
How many planets are in our Solar System and what are their names? How far apart are they? What are the differences between them? This activity will help answer some of these questions, while providing the opportunity for you to ask your own.

## Making Impact Craters

23 Oct 2008
During this activity you will be simulating the effect of a meteorite impact on the Earth. You will change the physical character of both the meteorite and type of surface that it hits and see what happens. The simulated results can then be compared to real craters at various locations across the globe.

## Measure the diameter of the Sun

01 Mar 2012
The Sun moves across the sky at a constant rate because of the rotation of the Earth. By measuring how fast the Sun moves you can work out how big the Sun appears in the sky. All you need are some household items and about 20 minutes on a sunny day.

25 Jul 2008

## Introduction

Asteroids, also known as Minor Planets or Planetoids, are a class of astronomical object generally used to describe a diverse group of small bodies that drift around the Solar System in orbit around the Sun. A near-Earth object (NEO) is a Solar System object whose orbit brings it into close proximity with the Earth.

## Play Bingo with Charles Messier

04 Jun 2009

Charles Messier lived in Paris in the 18th century. He wanted to become famous by discovering comets. When he looked through his telescope he often re-discovered objects which were already known and were not comets. So he didn't waste time, each time he found an object that did not move in the sky he catalogued it.

## Solar System Taboo

17 Nov 2009
Play a fun card game while learning about the huge variety of objects found within our Solar System, from the blazing Sun to icy comets in the Oort Cloud.