> An Earth mass (denoted as
M_E or
M⊕ ( M_{\oplus } ), where 🜨 is the standard astronomical symbol for Earth), is a unit of mass equal to the mass of the planet Earth. The current best estimate for the mass of Earth is M🜨 = 5.9722×10^24 kg, with a relative uncertainty of 10^−4. It is equivalent to an average density of 5515 kg/m3.
Average mass of a human: 50-75kg, depending on whether it's babies or not
Population of Earth: 8.1x10e9
Total mass of humans: ~ 400-600 x 10e9
Proportion of Earth's mass composed of live humans: 500e9 / 5.9e24 = 8.4e-14 = 0.00000000000084 %
According to the video series on "How the pyramids were built" at https://thepump.org/ by The Pharaoh's Pump Society, the later pyramids had a pool of water at the topmost layer of construction such that they could place and set water-tight blocks of carved stone using a crane barge that everybody walked to the side of to lift.
> An Earth mass (denoted as M_E or M⊕ ( M_{\oplus } ), where 🜨 is the standard astronomical symbol for Earth), is a unit of mass equal to the mass of the planet Earth. The current best estimate for the mass of Earth is M🜨 = 5.9722×10^24 kg, with a relative uncertainty of 10^−4. It is equivalent to an average density of 5515 kg/m3.
Average mass of a human: 50-75kg, depending on whether it's babies or not
Population of Earth: 8.1x10e9
Total mass of humans: ~ 400-600 x 10e9
Proportion of Earth's mass composed of live humans: 500e9 / 5.9e24 = 8.4e-14 = 0.00000000000084 %
According to the video series on "How the pyramids were built" at https://thepump.org/ by The Pharaoh's Pump Society, the later pyramids had a pool of water at the topmost layer of construction such that they could place and set water-tight blocks of carved stone using a crane barge that everybody walked to the side of to lift.