hi wat does this mean?

Question

heres a scientific sentence about earth's forming and i want to know if it meant that earth was smashed into another planet or what!: Earth was pretty young, it smashed into a planet-size body and it’s surface temperatures soared above 10,830 degrees Fahrenheit!

Answer 1

Planets form by the collision (and melting together) of many smaller objects (called planetesimals). These can be the size of cars, the size of mountains, or even larger.
Before the Earth was fully formed, it would have been subjected to a large number of these collisions, each object adding its mass (and the heat of collision) to the whole.
By the time all the planetesimals were absorbed by the forming Earth (and the other planets as well), all those collisions would have basically melted the entire Earth into one huge ball of molten rock and metal.

Just about the time the Earth was complete, one final huge planetesimal smashed into Earth at an angle, and a lot of debris was sprayed off Earth. That debris went into orbit around the Earth, and since it was small chunks it cooled very quickly and then coalesced (combined) to form the moon.

Answer 2

Our moon is earth stuff.

While the proto-earth was forming, it was larger and happily orbiting the sun. Suddenly a rogue planet the size of Mars hit it. The impact was a grazing blow that knocked off a large piece which eventually cooled and formed into the moon. That is the most accepted theory for the formation of the moon.

I don't know the exact temperatures created, but all matter was melted and most of it was turned into a plasma that then cooled. This means that the Earth is probably the youngest planet in our solar system.

Answer 3

We are not really able to determine what temperature the earth was during its fomation or even how all the elements of the earth formed while other planets are all frozen. People think that cosmologist were there at Creation and know all the Answer. Cosmologists are Scientists but they are above all also humans.

Answer 4

All it means is that during the accretion of material that makes up Earth, there might have been some "major additions" from time to time.

As a proto-planet's increasing mass and resultant gravity perturbed other proto-planets that were in, or close to the same orbit, such collisions very likely occurred.