How many centimeters is the circumference of the earth?Space and Astronomy
The equitorial radius of the Earth is 6,378 kilometers (km): Therefore, 6,378 km = 637,800,000 cm. or 6.378 * 108 cm.
What is the Earth’s circumference?
In 200 B.C. Eratosthenes estimated Earth’s circumference at about 46,250 kilometers (28,735 miles). Today we know our planet’s circumference is roughly 40,000 kilometers (24,850 miles).
How many centimeters long is the equator?
Earth’s Equatorial Radius to Centimeter Conversion Table
|Earth’s Equatorial Radius||Centimeter [cm]|
|0.01 Earth’s equatorial radius||6378160 cm|
|0.1 Earth’s equatorial radius||63781600 cm|
|1 Earth’s equatorial radius||637816000 cm|
|2 Earth’s equatorial radius||1275632000 cm|
How do you measure the circumference of a planet?
Video quote: The same as the diameter times pi but this one gave us the radius up here.
Who measure the size and circumference of Earth?
The Greek philosopher Aristotle (384-322 B.C.) is credited as the first person to try and calculate the size of the Earth by determining its circumference (the length around the equator) He estimated this distance to be 400,000 stades (a stadia is a Greek measurement equaling about 600 feet).
Who calculated circumference of Earth?
Eratosthenes‘ most famous accomplishment is his measurement of the circumference of Earth. He recorded the details of this measurement in a manuscript that is now lost, but his technique has been described by other Greek historians and writers.
What is the circumference of the Earth around the equator?
The distance around the Earth at the Equator, its circumference, is 40,075 kilometers (24,901 miles). The Earth’s diameter is also wider at the Equator, creating a phenomenon called an equatorial bulge.
What is the real shape of the Earth?
The Earth is an irregularly shaped ellipsoid.
While the Earth appears to be round when viewed from the vantage point of space, it is actually closer to an ellipsoid.
Where is the Earth’s circumference greatest?
Where is the Earth’s Circumference the Greatest? As the shape of the earth is an oblate spheroid, the diameter is different at the equator and at the poles. Since the diameter at the equator is greater than the diameter at the poles, hence, the circumference of the great circle at the equator is the greatest.
How many Earths are in the universe?
There are a billion Earths in this galaxy, roughly speaking.
How long would it take to walk around the Earth?
Walking non-stop at a pace of 3.1 miles per hour it would take 335 days to walk 24,901 miles, which is the circumference of the earth.
How fast is the Earth spinning?
roughly 1,000 miles per hour
The earth rotates once every 23 hours, 56 minutes and 4.09053 seconds, called the sidereal period, and its circumference is roughly 40,075 kilometers. Thus, the surface of the earth at the equator moves at a speed of 460 meters per second–or roughly 1,000 miles per hour.
Does the Sun rotate?
The Sun rotates on its axis once in about 27 days. This rotation was first detected by observing the motion of sunspots. The Sun’s rotation axis is tilted by about 7.25 degrees from the axis of the Earth’s orbit so we see more of the Sun’s north pole in September of each year and more of its south pole in March.
Why dont we feel the Earth spinning?
But, for the most part, we don’t feel the Earth itself spinning because we are held close to the Earth’s surface by gravity and the constant speed of rotation. Our planet has been spinning for billions of years and will continue to spin for billions more. This is because nothing in space is stopping us.
Does the Sun move?
Orbit and Rotation
The Sun orbits the center of the Milky Way, bringing with it the planets, asteroids, comets, and other objects in our solar system. Our solar system is moving with an average velocity of 450,000 miles per hour (720,000 kilometers per hour).
Why is the sun hot?
The core of the sun is so hot and there is so much pressure, nuclear fusion takes place: hydrogen is changed to helium. Nuclear fusion creates heat and photons (light). The sun’s surface is about 6,000 Kelvin, which is 10,340 degrees Fahrenheit (5,726 degrees Celsius).
Is the sun made of fire?
The Sun isn’t “made of fire”. It’s made mostly of hydrogen and helium. Its heat and light come from nuclear fusion, a very different process that doesn’t require oxygen. Ordinary fire is a chemical reaction; fusion merges hydrogen nuclei into helium, and produces much more energy.
Will the sun explode?
Our sun isn’t massive enough to trigger a stellar explosion, called a supernova, when it dies, and it will never become a black hole either. In order to create a supernova, a star needs about 10 times the mass of our sun.
How long will the Earth last?
The upshot: Earth has at least 1.5 billion years left to support life, the researchers report this month in Geophysical Research Letters. If humans last that long, Earth would be generally uncomfortable for them, but livable in some areas just below the polar regions, Wolf suggests.
Is Earth losing water?
Water flows endlessly between the ocean, atmosphere, and land. Earth’s water is finite, meaning that the amount of water in, on, and above our planet does not increase or decrease.
How long do we have until the Sun dies?
According to a study in the journal Nature Astronomy earlier this year, the Sun will ‘die’ in about 10 billion years. Stars, like the Sun, start to ‘die’ when they’ve burnt all of their hydrogen fuel. At this point, they expand and become a very large kind of star called a red giant.
Will the sun explode in 2022?
Luckily for us here on Earth, the eruption on February 15, 2022 occurred on the farside of the sun, the side facing away from our planet. But ESA and NASA predict geomagnetic storms are possible in the next few days as the active region on the sun responsible for the blast turns toward us.
What’s the Sun’s real name?
We English speakers always just call it the sun. You sometimes hear English-speakers use the name Sol for our sun. If you ask in a public forum like this one, you’ll find many who swear the sun’s proper name is Sol. But, in English, in modern times, Sol is more a poetic name than an official one.
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