Big Idea: The Earth is a planet orbiting the Sun - one of many stars
in our galaxy, which is one of many galaxies in the Universe. More info...
Demonstration: using a scale drawing to predict the time for a satellite close to the Earth. The results can later be compared...
Answer: two if you are in the International Space Station (ISS) and don’t know which module the bulb is in!
Stories from Physics
Recognising and celebrating outstanding contributions to the field of physics education.