What it’s like to stand here
PSR B1620-26 b
weight
4.49 g

Illustration computed from this world’s measured and derived values, not a photograph.

PSR B1620-26 b

PSR B1620-26 b is a confirmed gas-giant exoplanet in the constellation Scorpius, discovered in 2003 by Hubble Space Telescope.

Pulsar Timing: spotted by tiny shifts in the steady beat of its host pulsar.

PSR B1620-26
host star
13.30 R⊕
radius
795 M⊕
mass · measured
orbital period
avg temp
Human scale

PSR B1620-26 b is a giant ball of gas with no solid surface to stand on; you would simply sink into ever-thicker cloud.

4.49 g
surface gravity (no solid surface · measured mass)
one year, in Earth time
sun size, needs orbit
sky color, needs star temp
0.2×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
Calculate your exact weight on PSR B1620-26 b

What these mean: surface gravity · tidal locking · equilibrium temperature

If your children grew up herea playful thought experiment
NO GROUND: A DRIFTER, NOT A WALKER

There is no ground here to grow up on, only bottomless sky. A child could never stand, walk, or even fall to a surface, because there isn't one. Under 4.5 times Earth's gravity and pressure that only climbs the deeper you go, anything built for this world would not look human at all: picture something closer to a deep-sea creature than a person, broad and buoyant, drifting through the cloud decks with no need for legs and no floor to land on.

Body plan
Floating, not upright
With no surface and no fixed up or down, a skeleton built for standing would be useless; a drifting, gas-filled body would not.
Build
Broad and pressure-hardened
Pressure rises without limit toward the interior, so anything alive would have to be built like a deep-sea animal, not a land one.

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 a thin, helium-fast squeak.

There is no surface to stand on, and we have no temperature for this world, so its cloud-top acoustics cannot be modelled. In hydrogen-helium air sound races, so a voice would leap to a thin, almost cartoonish squeak.

The journey
Cosmic travel advisory
☆☆☆☆
Do not travel
  • !There is nowhere to land: no ground, no deck, only cloud that thickens into crushing pressure.

A playful read of PSR B1620-26 b’s measured and computed values, not a real advisory.

How long to get there · distance unknown away

Distance unknown for this world.

Size vs Earth
EarthPSR B1620-26 b is 13× the width of Earth
Explore from here · roam the neighborhood

Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.

Common questions

What is the gravity on PSR B1620-26 b?

PSR B1620-26 b is a gas giant with no solid surface to stand on. At its cloud tops, gravity pulls about 4.5 times as hard as Earth's.

Illustration generated from PSR B1620-26 b's confirmed parameters, not a photograph.