Who first said that the earth revolves around the sun?

Chinnaraji Annamalai @Chinnaraji-Annamalai

26 April 2023 1 2K Report

Galileo was threatened he should not disseminate that scientific fact. What fact did Galileo disseminate?

Oleg Cherkasov

Aristarchos from Samos island, ancient Greece. Copernicus, middle centures

More Chinnaraji Annamalai's questions See All

Every star like the sun is at a stationary position. Am I right?

The earth has a orbit, but not for the sun. Similarly, all planets have orbits, but not for stars like the sun.

18 July 2024 1,767 4 View

Whether the gravitational force between two objects (e.g: planets) attracts towards its centers of planets or acts as curvature?

My answer: the gravitational force between two bodies/planets attracts towards its centers of planets.

15 May 2024 691 2 View

Is the sunlight visible in space ?

The sunlight is not visible in the space because there is no particles in space to scatter and reflect the sunlight. Am I right?

14 May 2024 7,444 3 View

What is the difference between gravitation and gravity?

Gravitation is the attractive force between any two planets. Gravity is the force that pulls objects (within the Earth and its Atmosphere) toward the center of the Earth. Am I right?

23 April 2024 4,076 1 View

The whole water in the Earth's oceans are stable. Is this due to the gravity?

How does the gravity work in the Earth?

29 July 2023 6,271 4 View

Does the gravity of any massive object act towards the center of the object or as curvature ...?

Does the gravity of any revolving planet act towards the center of the planet or act as curvature towards the orbit of the planet revolving around its star?

23 July 2023 4,226 13 View

Einstein's mass-energy equivalence is just one value for the velocity in kinetic energy equation. Am i right?

E = (mv^2)/2 is the kinetic energy equation. Here, sqrt(2) * c = 423970560 m/s, where c = 299792458 m/s is speed of the light in vacuum. E = (m*[sqrt(2) * c]^2)/2 = mc^2. ER=m*(423970560 m/s)^2,...

21 July 2023 3,550 6 View

Anything that has mass also has gravity. Is it true?

Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their...

16 July 2023 6,905 59 View

What is wrong in the relativity theory?

The gravity of earth is always attracting all the things(including objects in motion) within the earth's gravitational field towards the center of earth.

04 July 2023 6,352 3 View

In the Universe, all the objects (except running in vacuum) are orbiting other object(s)or moving in a circular path. Why?

I think these phenomena follow the scientific facts defined in the classical mechanics, but not theories or definitions in Einstein's mechanics.

01 July 2023 1,254 9 View

Do you know best conditions for formation of best REE deposits?

I want to know more about REE deposits.

03 August 2024 6,930 2 View

Why cycling of matter important to life on Earth & movement of matter through an ecosystem different than movement of energy through an ecosystem?

Why is the cycling of matter important to life on Earth and movement of matter through an ecosystem different than the movement of energy through an ecosystem?

03 August 2024 5,061 3 View

Why does the flow of energy through the biosphere depend on the cycling of nutrients and matter and energy flow across the earth's subsystem?

03 August 2024 6,412 0 View

Does atmosphere affect flow of matter & energy on Earth & flow of energy in biosphere related to the flow of food through a food chain?

How does the atmosphere affect the flow of matter and energy on Earth and flow of energy in the biosphere related to the flow of food through a food chain?

02 August 2024 9,644 0 View

How do energy flow and matter change in Earth's interior and geosphere subsystem affect the flow of matter and energy on Earth?

02 August 2024 9,144 0 View

How do matter and energy flow during the interaction of Earth's subsystems and hydrosphere subsystem affect the flow of matter and energy?

02 August 2024 7,579 2 View

How does energy flow through Earth's systems and how does that affect climate and biosphere affect the flow of matter and energy on Earth?

02 August 2024 2,698 2 View

The Origin of Human Language?

I attended a lecture at the Baylor College of Medicine (~ 2019) where one of the questions was “Does birdsong have anything to do with human language?” Noam Chomsky would say, “Absolutely not!”...

31 July 2024 1,706 4 View

What is the best conditions for formation of REE ore deposits?

I want to know more about REE deposits.

31 July 2024 7,365 1 View

If the emission of all greenhouse gases is stopped now, will the temperature of the earth continue to rise?

Here's a serious question: If we were to stop emitting all greenhouse gases right now, would the Earth's temperature start to cool down, or would the existing greenhouse gases continue to warm the...

30 July 2024 5,121 4 View