- weight
- 0.08 g
- sun
- 0.03× as wide
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
Triton
Triton is a rocky world in our own solar system.
Standing on Triton, you would weigh about 92% less than you do on Earth. From here the Sun looks 0.03× as wide as it does from Earth, bathing the surface in warm white light. A year here lasts 165 Earth years, and at an estimated -235°C (-391°F) it is colder than almost anywhere in the solar system.
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
If your children grew up herea playful thought experiment
Barely any weight to fight, at 0.08 times Earth's gravity. A child who grew up here could grow remarkably tall and willowy, about 1.7x taller than on Earth: a 5 ft 10 in adult could stand nearer 9 ft 8 in, with long thin limbs and delicate bones that never had to bear much load.
- 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.
- !One of the coldest places known, around -235°C, with nitrogen frost and icy geysers.
- !Practically no atmosphere to breathe or to soften the cold.
- !Out at Neptune, the Sun is a thousand times fainter than on Earth.
A playful read of Triton’s measured and computed values, not a real advisory.
Triton is in our own solar system. It orbits about 30.07 AU from the Sun, so sunlight reaches it in roughly 250 minutes. From Earth it is about 29.07 AU away at closest, and a spacecraft is far slower:
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 Triton would take about 262 days; a real mission took Voyager 2 about 12 years to reach Neptune's neighborhood.
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 Triton?
Triton's surface gravity is about 0.08 times Earth's.
How much would you weigh on Triton?
Someone who weighs 150 pounds on Earth would weigh about 12 pounds on Triton.
How hot is Triton?
Triton's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about -235°C (-391°F).
How long is a year on Triton?
Triton completes one orbit of the Sun in 165 years.
The portrait of Triton is a real photograph (NASA/JPL/USGS, Public domain). The "stand here" scene and the size comparison are computed illustrations, not photographs.