Lunar Mountains

Aimed at pupils aged 11-16, this workshop challenges students to measure the shadows cast on the Moon’s surface, then utilise algebraic techniques to determine the height of those mountains.

Angles in Astronomy

An arcsecond is a very small angle
Credit: NSO
Angles are used a lot in astronomy. We can measure both the size of an object in the sky and mark its position by using angles.

However, sometimes the angles are very small - much less than a degree. Therefore, astronomers often use things called arcminutes and arcseconds.