THE SHORT ANSWER
A year on Mars lasts 687 Earth days, almost twice as long as ours, because Mars takes longer to go around the Sun. A Mars day is just a little longer than ours: 24 hours 40 minutes.
Big facts, for scale
- Gravity on Mars is 38% of Earth's, so a jump there goes almost three times as high.
- It's cold: about −60 °C on average. The air is about 95% carbon dioxide, so you couldn't breathe it.
- Mars has two small moons, Phobos and Deimos.
- Sunsets on Mars are blue. NASA's Curiosity rover photographed one in 2015.
- Getting there takes about 7 months, and Mars has about as much surface as all the dry land on Earth.
Watch the episode
Tiny Human vs. the Blorps: Who Gets Mars? goes out on TikTok, Instagram, Facebook and X. Times are shown in yours.
For grown-ups and teachers
Use the calculator to compare ages on Earth and Mars, then ask: why would your birthday come round less often on Mars? What would you need to pack to live there?
Sources
- NASA: Mars facts (year, day, gravity, temperature, air, moons)
- NASA Curiosity rover: blue sunset at Gale Crater (2015)
Facts last checked 4 November 2026. Tiny Human's art and voices are made with AI tools; every fact is checked by a person against the sources above.
