Solar System

What Can We See on the Sun?

Close up images of the Sun including solar flares, sunspots, and a solar eclipse

Kepler's Laws: Find the Mass of the Sun

Many years ago, a mathematician named Johannes Kepler created a set of rules explaining planets' movement in our Solar System.

The picture shows a cartoon portrait of Johannes Kepler in front of an artist's impression of the Solar System.

What are Asteroids and Comets?

The image shows an asteroid in space on the left, and a comet viewed from Earth on the right.

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.

The 'Space Age' Calculator

Every year, the Earth completes one orbit of the Sun, and every year, you have a birthday! And during a year, the Earth rotates 365 times on its axis and we experience 365 sun rises and sun sets.

A birthday cake with lit candles. Above it are the eight planets of our Solar System

Astronomical Influencers Quiz

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Test your astronomy knowledge while learning about the who's who of ancient to present day astronomy! 

Order the Orbit

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These orbit maps of the inner Solar System are in the wrong places on the calendar! Can you rearrange them so each image is on the correct date?

Anu Ohja

Occupation: Director of the UK’s National Space Academy and a Director of the National Space Centre

Research Areas: Education, Skills, Human Spaceflight, Exploration Science