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To convert Earth masses to kg: multiply by 5.9722 × 10²⁴.
M⊕ = 5.9722 × 10²⁴ kg ≈ 5.972 Yg (yottagrams). Earth = 1 M⊕ by definition.
For example, 1 Earth's Mass (M⊕) = 1.786167e+51 Deuteron Mass (md).
| Earth's Mass (M⊕) | Deuteron Mass (md) |
|---|---|
| 0.1 | 1.786167e+50 |
| 0.5 | 8.930837e+50 |
| 1 | 1.786167e+51 |
| 2 | 3.572335e+51 |
| 5 | 8.930837e+51 |
| 10 | 1.786167e+52 |
| 25 | 4.465418e+52 |
| 50 | 8.930837e+52 |
| 100 | 1.786167e+53 |
| 500 | 8.930837e+53 |
| 1000 | 1.786167e+54 |
The Earth mass is the mass of planet Earth, approximately 5.972 × 10²⁴ kilograms.
M⊕ = 5.9722 × 10²⁴ kg ≈ 5.972 Yg (yottagrams). Earth = 1 M⊕ by definition.
To convert Earth masses to kg: multiply by 5.9722 × 10²⁴.
Expressing exoplanet masses (e.g., 'a planet of 3 Earth masses'), moon masses, and asteroid masses.
Earth gains about 40,000 tonnes of mass per year from cosmic dust — but that's only 10⁻¹⁷ of its total mass.
Earth's mass is hard to visualize. The key insight: it's known from G × M⊕ (the gravitational parameter), not M⊕ alone.
Cavendish 'weighed the Earth' by measuring G. If you know g (9.8 m/s²) and Earth's radius, you can calculate M⊕ = gR²/G.
The deuteron mass is the mass of a deuterium nucleus (one proton + one neutron), approximately 3.344 × 10⁻²⁷ kilograms.
md < mp + mn by 2.224 MeV/c² (the binding energy). This 'mass defect' represents nuclear binding energy.
To convert deuteron masses to kg: multiply by 3.3435837724 × 10⁻²⁷.
Fusion energy research (deuterium-tritium and deuterium-deuterium reactions), NMR/MRI, and neutron production targets.
The deuteron's binding energy (2.224 MeV) is quite small, making it the most weakly bound stable nucleus.
Assuming md = mp + mn exactly — the mass defect (binding energy) makes the deuteron slightly lighter than the sum.
The deuteron is the simplest nucleus with more than one nucleon. Its binding energy (2.224 MeV) is E=mc² in action.



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