- weight
- 2.30 g
- sky
- deep orange
Illustration computed from this world’s measured and derived values, not a photograph.
AT2021ueyL b
AT2021ueyL b is a confirmed gas-giant exoplanet 3,392 ly from Earth in the constellation Pegasus, discovered in 2025 by Multiple Observatories.
Microlensing: spotted when its gravity briefly magnified the light of a more distant star.
AT2021ueyL b is a giant ball of gas with no solid surface to stand on; you would simply sink into ever-thicker cloud. Bathing the cloud tops in deep orange light. A year here lasts 11.4 Earth years.
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 2.3 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.
- !There is nowhere to land: no ground, no deck, only cloud that thickens into crushing pressure.
A playful read of AT2021ueyL b’s measured and computed values, not a real advisory.
How long to get there · 3,392 ly away
No other confirmed planets here yet. New ones auto-appear as telescopes report.
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
What is the gravity on AT2021ueyL b?
AT2021ueyL b is a gas giant with no solid surface to stand on. At its cloud tops, gravity pulls about 2.3 times as hard as Earth's.
How far is AT2021ueyL b from Earth?
AT2021ueyL b lies about 3,392 light-years from Earth.
How long would it take to get to AT2021ueyL b?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 5.3 million years.
How long is a year on AT2021ueyL b?
AT2021ueyL b completes one orbit of its star in 11.4 years.
Illustration generated from AT2021ueyL b's confirmed parameters, not a photograph.