- sun
- 0.02× as wide
- sky
- icy blue-white
Illustration computed from this world’s measured and derived values, not a photograph.
mu2 Sco b
mu2 Sco b is a confirmed gas-giant exoplanet in the constellation Scorpius, discovered in 2022 by Paranal Observatory.
Imaging: photographed directly, as a faint point of light beside its star.
mu2 Sco b is a giant ball of gas with no solid surface to stand on; you would simply sink into ever-thicker cloud. Its blue-white star looks 0.02× as wide as ours, bathing the cloud tops in icy blue-white light. At an estimated -114°C (-173°F) it is deeply frozen.
Catalog values (NASA Exoplanet Archive): mass 4,577 M⊕, radius 12.30 R⊕. Its catalog mass and radius imply a density of 13.6 g/cm³, denser than compressed iron, so they cannot both be right, and gravityfinder does not use mu2 Sco b in gravity rankings or weight calculations.
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
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; this is the sound at the cloud tops, where the air is mostly hydrogen and helium, the lightest gases there are. Sound races through them at about 897 metres per second, 2.6 times its Earth speed, flipping a voice into a thin, cartoon-helium squeak. The temperature behind that number is this world's computed equilibrium temperature; its real atmosphere is unknown. The demo plays the shift capped at 1.8x; the real effect would be even stronger.
A real voice sample, pitch-shifted (tempo held constant) to suggest the acoustics: a playful approximation, not a precise simulation. Voice: Lingua Libre / Vealhurl, CC BY-SA 4.0.
- !Deeply frozen at around -114°C (-173°F), far below the freezing point of water.
- !There is nowhere to land: no ground, no deck, only cloud that thickens into crushing pressure.
A playful read of mu2 Sco b’s measured and computed values, not a real advisory.
How long to get there · distance unknown awayCALCULATED
Distance unknown for this world.
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.
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
How hot is mu2 Sco b?
mu2 Sco b's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about -114°C (-173°F).
Illustration generated from mu2 Sco b's confirmed parameters, not a photograph.