Forces

What is Kepler's First Law?



This is a cartoon image of Johannes Kepler with a parchment-like background. A diagram of a solar system is featured in the top right corner.


What are the Risks from Asteroids?



An illustration of an asteroid heading towards the Earth


What is Gravity?



Planet Earth in space. Three children are standing on the planet. Arrows show the pull of gravity from where they are on the surface into the centre of the Earth.


Create An Expanding Universe

You have likely heard about the Universe expanding. Or that redshift can tell us about the movements of galaxies. Both are difficult ideas to imagine and understand.



Cartoon of a person blowing up a balloon. The balloon is covered with galaxies.


The 'Space Weight' Calculator

Ever wondered how heavy or light you would feel on another planet in our Solar System?



Cartoon of planets on a weighing balance in space. Jupiter is on the left side, weighing the balance is down. Earth, Mars, and Mercury are piled on top of each other on the other end of the balance.


Why Does the Earth Have Tides?

The level of the sea rises and falls about 2 times each day. We call these changes tides. But what causes them?



Still image from the tides simulator showing the Moon in orbit around the Earth


Rockets Quiz

Short Intro Text: 

Rockets are used to send astronauts, spacecraft, or equipment to space. They area vital part of space exploration and research. But how much do you know about how rockets work?





Johannes Kepler

Johannes Kepler
Credit: Wikimedia

Occupation: Astronomer, Mathematician, Scientist, Teacher

Year born: 1571

Research Areas: Planetary motion, optics, geometry

 


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