Space & Astronomy
1 / 15Which is the largest planet in our solar system?
About Space & Astronomy
Explore the cosmos! Test your knowledge of planets, stars, space missions, and the universe. This free general knowledge activity is built for older adults who want clear, readable browser-based games without sign-up friction.
General knowledge games mix recall, reasoning, and pattern recognition to keep each round varied and mentally engaging. This quiz includes 15 questions, so it works well as a quick session or as part of a longer brain-training routine. A printable version is available if you prefer offline play or want to share the game at home, in a classroom, or in a group setting.
About Space & Astronomy
Space & Astronomy is a free general knowledge quiz with 15 multiple-choice questions with a mix of 6 medium, 5 easy, 4 hard questions. Explore the cosmos! Test your knowledge of planets, stars, space missions, and the universe. A typical run takes about 7 minutes, hints are always one tap away, and your streak ticks up the first time you finish a game on a given day.
A few sample questions
1. How many planets are there in our solar system?
Answer: 8
There are 8 planets in our solar system. Pluto was reclassified as a 'dwarf planet' by the International Astronomical Union in 2006.
2. Who was the first person to walk on the Moon?
Answer: Neil Armstrong
Neil Armstrong took humanity's first steps on the Moon on July 20, 1969, during the Apollo 11 mission, famously saying 'That's one small step for man, one giant leap for mankind.'
3. What does a light year measure?
Answer: Distance
A light year is the distance that light travels in one year — about 5.88 trillion miles. It's used to measure the vast distances between stars and galaxies.
Frequently asked questions
How many questions are in Space & Astronomy?
Space & Astronomy has 15 multiple-choice questions. Each one has four answer options and an explanation that appears after you answer, so you learn something even when you miss.
Is Space & Astronomy free to play?
Yes. The entire SeniorBrainGames catalog — including Space & Astronomy — is free, with no sign-up required, no time limits, and no ads on top of the game. It also works offline once the page has loaded once.
How long does Space & Astronomy take?
Most players finish Space & Astronomy in about 7 minutes. You can pause between questions, replay it as often as you like, and there is no penalty for taking your time — answers are explained after you submit them.
What's a good follow-up after Space & Astronomy?
If you enjoyed this general knowledge quiz, try the Daily Challenge — five rotating questions, refreshed every 24 hours, that count toward your streak. You can also use the Surprise Me button on the homepage to land on a different game type for variety.
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