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4 paź 2021 · The rate at which the star disappeared and reappeared determined the density profile of Pluto’s atmosphere.
4 paź 2021 · Scientists used this occultation event to measure the overall abundance of Pluto's tenuous atmosphere and found compelling evidence that it is beginning to disappear, refreezing back onto its...
11 sty 2024 · Pluto Atmosphere. Surface Pressure: ~13 microbar Surface temperature: 24 - 38 K (-247 - -233 C) Scale height: ~18 km lower atmosphere, ~50 km above 30 km Mean molecular weight: ~28 Atmospheric composition: 99% Nitrogen (N 2), 0.5% Methane (CH 4), 0.05% Carbon Monoxide (CO), trace HCN, C 2 H x hydrocarbons.
The rate at which the star disappeared and reappeared determined the density profile of Pluto's atmosphere. "Scientists have used occultations to monitor changes in Pluto's atmosphere since...
13 lip 2015 · Pluto’s newly estimated size means that its density is slightly lower than previously thought, and the fraction of ice in its interior is slightly higher. Also, the lowest layer of Pluto’s atmosphere, called the troposphere, is shallower than previously believed.
18 mar 2016 · Pluto's small size and low mass mean that it has a density of 1.86 grams per cubic centimeter according to recent measurements by New Horizons, about 40 percent of Earth's density.
15 wrz 1988 · The mean density of the Pluto-Charon system is now accurately known at 1.99±0.09 g cm–3 (With formal errors five times smaller)1, through observations of total occultations and transits2.
