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Join Royal Observatory Greenwich astronomers as they explore the challenges astronauts would encounter on their long journey to Mars and what it might be like to live and work on the red planet! 

Students use the Doppler equation and angular momentum to calculate the mass of an orbiting extrasolar planet. Accompanies the video 'Alien worlds and the Doppler effect'.

Activity with instructions to accompany the video 'Making star trails'.

A classroom activity that looks at how shadows are formed and what affects their size, direction and shape.

Make your own constellations and asterisms with our star scope!

Meteorites are bits of space rock from the asteroid belt. Some are magnetic. This activity accompanies the video 'Space Rocks'.

Students learn about the transit method for finding planets and they use Kepler's 3rd law to determine whether the exoplanet Kepler-22b is habitable.

In this activity students look at the relationship between mass and weight on the Earth and on a comet.

A classroom activity in which students explore the relationship between the distances of planets from the stars they orbit and their orbital periods.

A classroom activity where students use distance, speed and time and light-years to calculate the time of travel to exoplanets.