Create An Expanding Universe
Why Does the Moon Have Phases?
The Moon is the brightest object in the night sky when its whole face is showing. This only happens at full Moon. So why isn't it always a full Moon?
Why Does the Earth Have Tides?
The level of the sea rises and falls about 2 times each day. We call these changes tides. But what causes them?
Telescopes Quiz
Telescopes are used to magnify distant objects. They are a vital tool for astronomy. Over the last few hundred years, scientists and engineers have built bigger and better telescopes, revealing the mysteries of the Universe. But how much do you know about telescopes on Earth and beyond?
Timeline of Astronomy
Did you know that our understanding of science and space had gradually been built over thousands of years? Discover the people from the past whose observations and experiments helped us understand our Solar System and
Astronomical Influencers Quiz
Test your astronomy knowledge while learning about the who's who of ancient to present day astronomy!
Order the Orbit
These orbit maps of the inner Solar System are in the wrong places on the calendar! Can you rearrange them so each image is on the correct date?
Pair the Stages of a Star
Though they shine for many thousands, and even millions of years, stars do not last for ever. They ignite, burn, and then run out of fuel and go out.
Can you match the images of each stage of a star's existence to the correct description?