0
No. Look at this:
Why is the Earth's core so hot? Was the Earth once a star, before it became a planet?
Earth's core temperature is about 6,000° C. By coincidence, this is about the same as the Sun's surface temperature (but muchcooler than the Sun's core temperature, which is about 15,600,000° C). The Earth's core is cooling, but at a very slow rate. Over the past three billion years it has probably cooled by a few hundred degrees. Currently, the Earth's core temperature is not changing much because, through radioactive decay (nuclear fission - the breakup of the nuclei of heavy elements, like uranium), it is generating about as much heat as it is losing.
To answer the second part of this question, some definitions are in order. A star is a self-luminous body that shines by generating energy internally through nuclear fusion (the combining of nuclei of light elements like hydrogen and helium). The Sun is a star. A planet shines by reflected light from the Sun. The solar system has nine "major" planets (of which Earth is one) and innumerable "minor" planets (asteroids and comets of various kinds).
Star masses range from about 0.04 times, to 150 times, the mass of the Sun. The mass of the Earth is 0.000003 times that of the Sun (and the mass of Jupiter, the largest planet in the solar system, is 0.001 times that of the Sun).
Although stars lose mass as they evolve, none lose enough to wind up anywhere near the mass of even the most massive planet. So, the bottom line is: Stars do not evolve into planets.
For a great animated simulation showing the evolution of stars with masses between 0.1 and 120 times that of the Sun see the stellar evolution simulation created by Terry Herter for his Astronomy 101/103 course at Cornell University. You will need a JAVA enabled browser to view this simulation.
Source: see related link. The author of this excerpt is not me, it is Dr. Ed Tedesco. Credit goes to him.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoMany Greeks (Eratosthenes and others) believed this over 2000 years ago.
Wiki User
∙ 13y agoThe Earth was formed about 4.54 billion years ago. When it "actually" became a planet as apposed to a crumpled collection of rocks is undefined.
Wiki User
∙ 14y ago14 billion years ago
Add your answer:
Earn +20 pts
Is the earth's atmosphere heated directly by a planet or a star?
Earth is heated by the sun, which is a star.
What planet is the closest star to earth?
Planets and stars are not the same. Venus is the closest planet, on average. The sun is the closest star.
What would happen if a neutron star collided with earth?
It is extremely unlikely that a neutron star (or any star or planet) will collide with the Earth, so this is not something that you need to worry about, however, if a neutron star were to collide with the Earth, the Earth would be captured by the intense gravitational field of the neutron star, and would be absorbed by the star. Under sufficient pressure, electrons and protons will merge to form neutrons, and so the atomic matter of which the Earth is composed can be converted into pure neutrons.
What are non man made satellites?
non made satellites are those which orbits any planet or star such as earth,moon.
When Venus is seen in the western sky after the sun has set the planet is often called a an star?
In those circumstances, it's called "the Evening Star". Similarly, when it appears in the sky before sunrise, it's called "the Morning Star".
Earth is to planet as sun is to?
...star. Earth is a planet, the Sun is a star.
What is the name of the closest star to your planet?
My planet is Earth. Earth's closest star is the Sun.
What is the name of the largest closest star to planet earth?
The star closest to Earth is the sun. The phrase "... largest to planet Earth ... " is meaningless.
What kind of star is earth?
Earth isn't a star... It is a terrestrial planet.
Is your earth a star or a sun?
Neither. Earth is a planet; the sun is a star.
What is Earth a moon a star a planet or galaxy?
a planet
Is earth is the nearest star to sun?
No. Earth is a planet. The planet Mercury is the nearest planet to the Sun. The nearest star to the Sun is called Proxima Centauri.
Is the earth a large or small star?
The earth is a planet, not a star. An example of a star would be the sun.
Is Mars the nearest star to earth?
No. Mars is a planet, not a star. The closest star to Earth is the sun.
What is the sun and the earth?
The sun is a "star" The earth is a "planet"
Is earth one big star?
no. it is a planet not a star the sun is a star
When did Jupiter became a star?
Jupiter is a planet. It has never been a star and never will be a star.
