- weight
- ≈ 0.23 g
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
Kepler-879 c
Kepler-879 c is a confirmed rocky exoplanet 2,618 ly from Earth in the constellation Cygnus, discovered in 2024 by Kepler.
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
Standing on Kepler-879 c, you would weigh roughly about 77% less than you do on Earth. Bathing the surface in warm white light. A year passes in just 15.5 hours.
What these mean: surface gravity · tidal locking · equilibrium temperature
If your children grew up herea playful thought experiment
Low gravity, about 0.23 times Earth's. A child who grew up here could become strikingly tall and lightly built, about 1.3x taller than on Earth: a 5 ft 10 in adult could stand nearer 7 ft 10 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
Your voice would sound much as it does on Earth.
We do not yet have a temperature for this world, and its atmosphere is unknown, so its acoustics cannot be modelled. In Earth-like air a human voice carries as you know it, and without the temperature that is as far as the physics will take us.
- !Far too little gravity, about 0.23 times Earth's, to hold a breathable atmosphere: effectively an airless vacuum.
A playful read of Kepler-879 c’s measured and computed values, not a real advisory.
How long to get there · 2,618 ly away
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 Kepler-879 c?
Kepler-879 c's surface gravity is about 0.23 times Earth's, estimated from its size.
How much would you weigh on Kepler-879 c?
Someone who weighs 150 pounds on Earth would weigh about 34 pounds on Kepler-879 c.
How far is Kepler-879 c from Earth?
Kepler-879 c lies about 2,618 light-years from Earth.
How long would it take to get to Kepler-879 c?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 4.1 million years.
How long is a year on Kepler-879 c?
Kepler-879 c completes one orbit of its star in 15.5 hours.
Illustration generated from Kepler-879 c's confirmed parameters, not a photograph.