← JUPITER DIVE

INTO THE EYE · THE ANCIENT COSMOS

What we know.
What we infer.

The game follows the film’s reference track. It holds exact samples instead of pretending to measure the air continuously. The ship and its escape are a story.

Read the labels

MEASURED
From a spacecraft or telescope reference. Galileo’s descent tables are smoothed profile rows, rather than raw sensor readings.
MODEL
From a published cloud, chemistry or radiation model.
ESTIMATE
The Ancient Cosmos’ own calculation from the published sources; method shown.
UNKNOWN
Nobody has measured it here.
STORY
The fictional ship, drones, shield, hull limit and hazards. Flight timing, scores and system percentages are game values.

Keep these limits in view

Method: hotter as pressure rises

Below the last Galileo profile row, extend the dry adiabat: T = 428 K MEASURED × (P / 22.05 bar MEASURED)0.298 ESTIMATE. The measured lapse-rate magnitude is 1.944 K/km MEASURED. Depth beneath the anchor comes from the temperature difference divided by that lapse rate.

This assumes ideal gas, constant heat capacity and constant gravity. Moisture changes the profile. Hydrogen’s heat capacity rises in the deep; the gas eventually stops behaving ideally. Treat the deep profile as an estimate, with growing uncertainty.

Method: air as a shield

Air column = pressure / gravity. Use 23.7 m/s² ESTIMATE for the local gravity estimate. At the reference level the column is about 420 g/cm² ESTIMATE, or 41 % ESTIMATE of Earth’s 1,033 g/cm² MEASURED. Near 2.4 bar ESTIMATE, there is more air above than at Earth’s surface. This is a column comparison, not a measured crew radiation dose. No verified dose is displayed.

Reference facts

size now
14,200 km ESTIMATE · science sheet §1
earths
1.1 Earth diameters ESTIMATE · science sheet §1
size old
23,300 km MEASURED · science sheet §1
voyager year
1979 MEASURED · science sheet §1
roots
350 km MEASURED · science sheet §1
lap short
3.6 days MEASURED · science sheet §1
lap long
4.5 days MEASURED · science sheet §1
magnetosphere
20 million km MODEL · science sheet §8
belt
2 Jupiter radii MODEL · science sheet §8
electrons
10 MeV MODEL · science sheet §8
ion belt
1.3 Jupiter radii MEASURED · science sheet §8
vault
172 kg MEASURED · science sheet §8
vault reduction
800 times MEASURED · science sheet §8
air one
420 g/cm² ESTIMATE · science sheet §8
air share
41 % ESTIMATE · science sheet §8
earth column
1,033 g/cm² MEASURED · science sheet §8
air crossover
2.4 bar ESTIMATE · science sheet §8
gravity
23.7 m/s² ESTIMATE · science sheet §9
entry speed
47.4 km/s MEASURED · science sheet §3
entry g
228 g MEASURED · science sheet §3
shock
16,000 °C MEASURED · science sheet §3
fall time
58 minutes MEASURED · science sheet §3
site
6.5 ° N MEASURED · science sheet §2
mission year
1995 MEASURED · science sheet §3
ammonia base
0.7-0.84 bar MODEL · science sheet §2
brown base
1.3 to 2.6 bar MODEL · science sheet §2
brown temp
185-224 K MODEL · science sheet §2
brown light
0.1 % of Earth noon ESTIMATE · science sheet §6
shallow
2 bar MEASURED · science sheet §7
lightning
1.6 x 10^10 J MEASURED · science sheet §7
hydrogen
13.00 bar MEASURED · science sheet §4
zero
0 °C MEASURED · science sheet §4
venus pressure
92 bar MEASURED · science sheet §4
venus temp
464 °C MEASURED · science sheet §4
melting
660 °C MEASURED · science sheet §4
lapse
1.944 K/km MEASURED · science sheet §4
exponent
0.298 ESTIMATE · science sheet §4
anchor temp
428 K MEASURED · science sheet §4
anchor pressure
22.05 bar MEASURED · science sheet §4
wind direction
Counter-clockwise MEASURED · science sheet §1
wind counter
cyclonic ring MEASURED · science sheet §5

Bibliography and credits

References below are the bibliography supplied with the film’s science sheet. The profile is from NASA’s Galileo PDS tables; storm observations and cloud models are identified in their papers. No external resource is loaded until you choose a link.