What it’s like to stand here

DENIS-P J082303.1-491201 b

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

DENIS-P J082303.1-491201 b

DENIS-P J082303.1-491201 b is a confirmed gas-giant exoplanet 67.7 ly from Earth in the constellation Vela, discovered in 2013 by Paranal Observatory.

67.7 lyDiscovered in 2013 by Paranal Observatory

Astrometry: spotted by the side-to-side wobble it makes its star trace across the sky.

DENIS-P J082303.1-491201 →

host star

11.90 R⊕

radius

9,058 M⊕

mass · measured

246 days

orbital period

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avg temp

Human scale

DENIS-P J082303.1-491201 b is a giant ball of gas with no solid surface to stand on; you would simply sink into ever-thicker cloud. A year passes in just 246 days.

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your weight, not stated

EXCLUDED

246 days

one year, in Earth time

CALCULATED

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sun size, needs orbit

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sky color, needs star temp

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jump, needs gravity

normal

day/night cycle (not tidally locked)

Catalog values (NASA Exoplanet Archive): mass 9,058 M⊕, radius 11.90 R⊕. Its catalog mass and radius imply a density of 29.6 g/cm³, denser than compressed iron, so they cannot both be right, and gravityfinder does not use DENIS-P J082303.1-491201 b in gravity rankings or weight calculations.

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

If your children grew up herea playful thought experiment

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 crushing 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 demoEXPERIMENTAL · just for fun

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