Distance

Hunting For Asteroids

Aimed at pupils aged 11-14 this workshop encourages pupils to ‘blink’ between several images, taken by the Liverpool Telescope, in a bid to find asteroids. The activity can then be extended to them using the LT Image software functionality to calculate the speed of the asteroids, or simply a discussion on what asteroids are and how we track them.

Standard Candles

Standard candles are used to
calculate relative distances.
Credit: Wikimedia (user Bangin)
 

Imagine that you have a type of star that is easy to recognise and is always exactly the same. In other words, if you were to put two of these stars side-by-side, it would be very hard to tell them apart.


Light Year

Distance from Earth to, Proxima Centauri (not to scale)
Credit: Mandy Bailey and Wikimedia
The light-year is a way of measuring distance - and not time as you might think from the name.

It is the distance that light travels in one year.