- weight
- 0.17 g
- sun
- about the same
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
The Moon
The Moon is a rocky world in our own solar system.
Standing on The Moon, you would weigh about 83% less than you do on Earth. From here the Sun looks about the same size as it does from Earth, bathing the surface in warm white light. A year passes in just 27 days, and it sits squarely in the habitable zone, among the more Earth-like worlds known.
How closely this world matches Earth in size and warmth, from 0 to 1 (Earth = 1.0). Computed by gravityfinder. See every world ranked →
What these mean: surface gravity · tidal locking · equilibrium temperature · Earth similarity · habitable zone
If your children grew up herea playful thought experiment
Low gravity, 0.17 times Earth's. A child who grew up here could become strikingly tall and lightly built, about 1.4x taller than on Earth: a 5 ft 10 in adult could stand nearer 8 ft 4 in, with long limbs and slender bones.
- Bones
- Light and slender
- With little weight to carry, the growing skeleton lays down far less bone, the way astronauts' bones thin in months of low gravity.
- Heart
- Unhurried
- With less weight pulling blood down toward the feet, the heart has far less work to do.
- Movement
- Bounding and springy
- So little weight means each step would carry the body up and forward in long, floating strides.
A playful thought experiment from this world’s gravity, not a prediction about any real person. No human has ever grown up off Earth, so no one truly knows; the direction (taller in low gravity, shorter and stockier in high) follows how growing bodies respond to weight.
Hear how a voice sounds herea computed acoustic demo
You would hear nothing at all.
With essentially no atmosphere, there is no medium to carry sound. You could shout into someone's helmet from an inch away and they would hear nothing: space is silent.
- !No atmosphere at all: an airless vacuum with nothing to shield you from solar and cosmic radiation.
- !Surface temperatures swing from roughly +120°C in sunlight to -130°C in shadow.
- !Gravity is about one sixth of Earth's, so you would bound rather than walk.
A playful read of The Moon’s measured and computed values, not a real advisory.
The Moon is in our own solar system. It orbits about 1.00 AU from the Sun, so sunlight reaches it in roughly 8 minutes. From Earth it is about 384,400 km away, and a spacecraft still takes a while:
How long to get there with today’s craft
At the speed of the Parker Solar Probe, the fastest craft ever built, the trip to The Moon would take about 33 min; a real mission took the Apollo crews about 3 days each way.
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
What is the gravity on The Moon?
The Moon's surface gravity is about 0.17 times Earth's.
How much would you weigh on The Moon?
Someone who weighs 150 pounds on Earth would weigh about 25 pounds on The Moon.
How hot is The Moon?
The Moon's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about -23°C (-10°F).
How long is a year on The Moon?
The Moon completes one orbit of the Sun in 27 days.
The portrait of The Moon is a real photograph (Gregory H. Revera, CC BY-SA 3.0). The "stand here" scene and the size comparison are computed illustrations, not photographs.