It explains the Sun's characteristics, including its size, temperature, and composition, and compares it to other stars using the Hertzsprung-Russell diagram. The Sun is identified as a yellow ...

The other mirror (mirror B in the diagram) is attached to a movable arm. Light from an object, let's say the sun, reflects off this mirror. The arm can be moved to a position where the sun's ...

Elongation is the angle, in degrees, between the Sun and the planet as seen from here on the Earth. Superior planets (those that lie further from the Sun than us: Mars, Jupiter, Saturn, Uranus, ...