Space facts get thrown around a lot, but plenty of people would struggle to put a name to half of them if asked directly.

This quiz gives you fifteen clues spanning planets, galaxies, space history and the physics that holds it all together, and asks you to pick the right answer from four options. It mixes the facts everyone half remembers with a few that might genuinely surprise you. Work through them all and find out whether you finish Lost in Space, a casual Stargazer, a sharp Mission Specialist, or a true Astronaut.

FAQs:

What does this quiz cover?
A mix of planets, galaxies, space history, and basic physics and phenomena, from black holes to auroras.

Which clue trips people up the most?
The Venus one usually does it. People assume Mercury must be the hottest planet since it’s closest to the Sun, but Venus actually holds that title.

Can I play it again?
Yes, “Try again” reshuffles both the questions and the answer order.

Is the quiz free to play?
Yes, no sign up or download required.