Ireland Junior Cycle

How do we find asteroids?

Distances to objects in space are very, very large. The nearest star (excluding the Sun), Alpha Centauri, is 41.23 trillion km, or 41,320,000,000,000 km!!

Have you ever wondered how big a galaxy is? They contain millions to billions of stars but what does that really mean for size?

Reading about sizes in a book is one thing, but what if you could make an observation of a galaxy and then measure its size?

How far apart are the planets in the Solar System. The answer may surprise you!

The distance between the planets in our Solar System is not regular. The inner 4 rocky planets are spaced much more tightly than the outer 4 giant planets.

Download, print and display this free poster!

A solar eclipse happens when the Moon passes between the Earth and the Sun. The Moon stops the Sun’s

Have you ever wondered how big each of the planets is? Bigger or smaller than the Earth?

Do you know how many planets in our Solar System have rings? Or how many have moons? Learn some interesting facts about the planets in our Solar System with these free printable posters!