Diagram of a planet (e.g. the Earth, blue) transiting in front of its host star (e.g. the sun, yellow). Left: The lower black curve shows the brightness of the star noticeably dimming over the ...

Our home, planet Earth, is part of a system of bodies that orbit a central star – the Sun. This solar system consists of four inner rocky planets and four outer gas giant planets as well as an ...

Narrator: As the solar system grew, four rocky planets: Mercury, Venus, Earth and Mars, were created closest to the Sun. Made of rocks and metals, they have solid surfaces and a central core of ...