We are in the Milky Way. If you travelled on an extremely fast spaceship for more than two million years, you would reach our neighbour, the Andromeda galaxy. All other galaxies are even further away.
How exactly do the stars twinkle in the night sky? As it turns out, the answer is full of hot air... and cold air.
Understanding how the billions of stars in our galaxy formed and evolved is the subject of a huge galactic archaeology project.
Sonification is a technique for converting data into sound. It could transform the study of distant worlds.