Since humans first started the process of exploring around the Earth, they have been trying to find out how wide the Earth is. And when they managed to find the answer, a new question arose, namely how much the Earth weighs.
Over time, scientists managed to reveal that Earth is a planet with the heaviest and densest mass compared to other planets. So how much does the Earth weigh when weighed? Here's the presentation.
Over the last few centuries, methods for calculating the weight of the Earth have become increasingly sophisticated and recent calculation methods estimate that the current weight of the Earth is 5.9736x1024kg, launches from Universe Today.
With an average radius of 6,371.0 km (3,958.8 miles), Earth is the largest terrestrial planet in our Solar System. Earth contains silicate rocks and metals, which are distinguished by a solid inner core, an outer core of liquid metal, and a silicate mantle and crust made of silicate material.
Earth is composed of about 32% iron, 30% oxygen, 15% silicon, 14% magnesium, 3% sulfur, 2% nickel, 1.5% calcium, and 1.4% aluminum, with the remainder consisting of trace elements. Meanwhile, the core region of the Earth consists of iron (88.8%), with smaller amounts of nickel (5.8%), sulfur (4.5%), and less than 1% trace elements.
Earth is also the densest planet in the Solar System, with an average density of 5.514 g/cm3 (0.1992 lbs/cu in). Between its size, composition, and distribution of matter, Earth has a mass of 5.9736×1024 kg (~5.97 billion trillion metric tons) or 1.31668×1025 lbs (6.585 billion trillion tons).
But because Earth's density is uneven, that is, it is denser in the core than in its outer layers, its mass is also unequally distributed. In fact, the density of the inner core (at 12.8 to 13.1 g/cm³; 0.4624293 lbs/cu in), whereas the density of the crust is only 2.2–2.9 g/cm³ (0.079 – 0.1 lbs/cu in in).
This overall mass and density is also what causes Earth to have a gravitational pull equal to 9.8 m/s² (32.18 ft/s2), which is defined as 1 g.
Modern scientists know the mass of the Earth by studying how objects fall on it. Gravity is created by mass, so the more mass an object has, the more gravity it will attract.
In fact, astronomers didn't accurately know the mass of Mercury or Venus until they finally put the spacecraft into orbit around them.
They have rough estimates, but once there is a spacecraft in orbit, they can make final mass calculations.