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https://scitechdaily.com/earth…onnes-of-mass-every-year/
"According to some calculations, the Earth is losing 50,000 metric tons of mass every single year, even though an extra 40,000 metric tons of space dust converge onto the Earth’s gravity well, it’s still losing weight.
Chris Smith, a microbiologist, and Dave Ansel, a Cambridge University physicist provided the answer in BBC Radio 4’s More or Less program. The 40,000 metric ton of mass that accumulates comes from space dust, remnants of the formation of the solar system."
It's funny to read...
“It is known that the power of solar radiation per unit of the earth's surface is equal to
N = 1.40*103 W/m2 = 0.14 W/cm2.
Since this power is formed by photons emitted by the electrons of the Sun and having mass, it is possible to determine the mass carried away by photons during the existence of the Sun.
The kinetic energy and power of a photon from the middle of the light spectrum - a green photon is equal to
mf = 5•10-36 kg
Its kinetic energy is
E= mC2 = 5•10-36 (2.998•108)2 = 4.5•10-19 J
It is numerically equal to the photon power
Nf = mC2 /sec = 4.5•10-19 J/sec(Watt)
How many light green photons form the specified thermal power N = 1.40•103 W/m2 = 0.14 W/cm2 per square centimeter of the Earth's surface?
Dividing the thermal power N = 0.14 W / cm2, formed by light photons on each square centimeter of the Earth's surface, by the power Nf = 4.5 × 10-19 W of one (green) photon, we obtain
nf = N/Nf = 0.14 W / cm2/ 4.5•10-19 W/ photon = 3.11•1017 photons / cm2
The area of the sphere Sz with the orbital radius of the Earth is equal to
Sz = 4π • Rz2 = 4 • 3.14 • (1.5 • 1011 m)2 = 28.30•1022 m2 = 2.83•1027 cm2
How many photons does the Sun emit per second on the inner surface of a sphere with the orbital radius of the Earth?
nff = nf • Sz = 3.11•1017 photons / cm2 • 2.83•1027 cm2 = 9.1•1044 photons/sec
What is the mass of photons emitted by the Sun per second on the inner surface of a sphere with the orbital radius of the Earth?
M1f = nff • mf = 9.1•1044 photons/sec • 5 •10-36 kg/ photon (green) = 4.55•109 kg/s = 4.55•106 tons/sec
Our Sun emits per second the number of only light, green photons, the total mass of which is 4.55 million tons.
For a year (31536000 sec), the mass of green photons that the sphere of the Earth absorbs is equal to -
31536000 sec • 4.55•106 tons/sec = 1,43•1014 tons
Mass of the Earth 5.97•1021 tons, i.e. the mass of green photons per year is 2.4•10-6 percent of the mass of the Earth.
Compare - "the Earth is losing 50,000 metric tons of mass every single year," and the mass of the Earth annually absorbs - 1.43•1014 tons/year
