Orbits
Physics: Edexcel IGCSE, topic 8.1.3
Orbital Motion
Planets, moons (natural satellites) and man-made satellites (artificial satellites) are all in orbit. They are all kept in orbit by gravity and travel in circular motion.

Planets orbit the Sun

Moons orbit planets

Artificial satellites
- Artificial satellites are built to orbit the Earth.
Test yourself on Orbits
Which of these orbits the Sun?
Which of these orbits the Earth?
Which of these orbits the Sun?