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11 sty 2024 · Diurnal temperature range (equator): 95 K to 390 K (~ -290 F to +240 F) Total mass of atmosphere: ~25,000 kg Surface pressure (night): 3 x 10-15 bar (2 x 10-12 torr) Abundance at surface: 2 x 10 5 particles/cm 3 Estimated Composition (night, particles per cubic cm): Helium 4 (4 He) - 40,000 ; Neon 20 (20 Ne) - 40,000 ; Hydrogen (H 2) - 35,000 ...
- Earth Fact Sheet
Mass (10 24 kg) 5.9722 Volume (10 10 km 3) 108.321...
- Planetary Fact Table
Planetary Fact Sheet in Metric Units. Planetary Fact Sheet -...
- Notes on the Fact Sheets
Gravitational Constant (G) - Relates gravitational force to...
- Planetary Fact Sheets
Author/Curator: Dr. David R. Williams,...
- Earth Fact Sheet
Problem 178: The Mass of the Moon - Students use the period and altitude of a NASA lunar spacecraft to determine the mass of the moon. [Grade: 8-11| Topics: Algebra]
The moon's mass is about 0.012 times that of the Earth (7.35 × 10 22 kg). The moon's gravity is one-sixth that of the Earth. This explains why astronauts are unable to walk on the moon as they do on the Earth. The origin of the Moon is uncertain, but the leading theory that explains the origin of the moon is known as "planetessimal impact."
11 kwi 2022 · The Moon has only one-eightieth the mass of Earth and about one-sixth Earth’s surface gravity—too low to retain an atmosphere (Figure 9.1.1 9.1. 1 ). Moving molecules of a gas can escape from a planet just the way a rocket does, and the lower the gravity, the easier it is for the gas to leak away into space.
Examples of Scientific Notation: The Mass of the Sun: 1,989,000,000,000,000,000,000,000,000,000 kilograms = 1.989x10 30 kilograms The Size of a Hydrogen Atom: 0.0000000000106 meters = 1.06x10-11 meters. In each case, use of scientific notation eliminates most of the zeros which are just place-holders for factors of ten, letting us concentrate ...
In fact, when numbers become truly large in everyday life, such as the national debt in the United States, we call them astronomical. Among the ideas astronomers must routinely deal with is that the Earth is 150,000,000,000 meters from the Sun, and the mass of the hydrogen atom is 0.00000000000000000000000000167 kilograms.
When doing calculations the mass and radius of the Earth can be represented by $M_{\oplus}$ and $R_{\oplus}$ respectively. The planets all have their own symbols which can easily be found online. ...
