Why are there so many planets?

Answer 1

First of all we all live on a planet. Astronomers study planets because they usually represent approximations of the early Earth and they help us understand the formation of the Solar System.
The planets are the repository of 98% of the angular momentum in the solar system. If all the planets were collapsed into the Sun it would rotate 50 times faster and perhaps throw off a new disk that would condense into more planets.

Anyway a planet is somewhere to live, I suppose.

Answer 2

there are so many planets because,well let me phrase it like a story,the planets are basicly the galaxies babies,but those babies have more babies constantly,the babies that were born from the other babies are called meoterors,over time meoteors grow bigger,then finaly they have babies!YOUR WELCOME!XD

Answer 3

Because planets are chunks of matter left over from explotions, collisions, etc. Eventually, the gravitational pull of something , such as our sun, catches the planet an it orbits around the sun. Wala, a planet.

Answer 4

The Solar System have today ONLY eight planets because all other planets, and protoplanets, formed during tens of millions years after the Sun had begun its life as a T Taury star, were mutually destroyed by gigantic collisions.

During many millions of years, the Solar system was very much like a cosmic billiard table: every recently formed body collided - with moderate to extreme violence - with other bodies.

A great number of planets and planetesimals (many astronomers belive our stellar system had, in the first stages of formation, several hundereds of planetary bodies), were totally destroyed and formed what it would became much later the Asteroid Belt and/or the Kuiper Belt.

Other bodies collided and formed other different planets (the case of the primordial Earth and a Mars-sized planet collision creating the binary system Earth/Moon).

There were MIGRATIONS of planets (including jovian planets) from the Sun's neighbour to outer solar system, and vice-versa, causing bizarre anomalies in all planet's orbits.

Some planets were simply gravitationally thrown out to the Kuiper Belt (such as the trans-Neptunian objects like Sedna and Eris), eventually to extremely eccentric orbits in the Oort Cloud or even expelled for ever from the solar system, becaming «rogue planets».

Answer 5

Planets form from the leftover material in the disk of gas and dust surrounding a young star. As the material clumps together and grows in size, it eventually forms planets. With billions of stars in our galaxy, there are many opportunities for planets to form around them.

Answer 6

Planets were made by God and that is why we have them. Not by our own will.

Answer 7

They just are. Theres nothing you can do about it.

Answer 8

we have planets because that god made them and we wouldn't have earth.

Answer 9

Most astronomical matters do not lend themselves to "why"-type questions. We observe that things ARE; sometimes it's not clear "why".