how memy planets ar their and all the names?

Answer 1

The eight or nine planets in our solar system are the only ones with real names. All the other planets discovered have letter designations based on their order of discovery (starting with b, then c, etc.) and the star that they orbit.

There have been about 250 or so extrasolar planets discovered, and more seem to be discovered every month or so because of greater skill in detecting them now (e.g. gravitational microlensing can detect more than the established radial velocity method). Some of the more interesting examples of extrasolar (outside our solar system) planet names:

WASP-4 b, SWEEPS-11, Gliese 876 b, Gliese 876 c, Gliese 876 d, 55 Cancri b, 55 Cancri c, 55 Cancri d, 55 Cancri e, 55 Cancri f, OGLE-TR-10 b, Lupus-TR-3 b, Upsilon Andromedae b, Upsilon Andromedae c, Upsilon Andromedae d, Rho Coronae Borealis b, Epsilon Tauri b, Gamma Cephei b, 47 Uma b, 14 Herculis b, et al.

A more complete list can be obtained at the list below.

Answer 2

When I was at school it was nine, but alas, Pluto has been demoted, so then there were eight. They're discovering new "trans-Neptunian objects" all the time now, so Pluto is no longer unique. The likelihood of any more planets being found in our solar system is remote, but they are finding more in other neighbouring star systems - as telescopes improve, so do does our ability to detect new planets. There used to be some theory about a planet nearer the sun than Mercury called "Vulcan" (complete rubbish) and the mythical "Planet X" that lies beyond Neptune and Pluto which is best left to people like Daffy Duck / Duck Dodgers.

That leaves us with Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Pluto along with the asteroid Ceres (between Mars and Jupiter) are now classified as "dwarf planets" along with Eris.

Answer 3

There are 8 planets right now - Pluto was demoted! But here are the planets in order and an easily-memorized way to learn them.

Mercury - Mother
Venus - Very
Earth - Easily'
Mars - Made
Jupiter - Jelly
Saturn - Sandwiches
Uranis - Under
Nepturn - No
(Pluto) - Protest

Answer 4

To be accurate about it, probably millions upon millions.

But, in our vicinity alone (Our solar system), we currently have 8 planets.
These planets include: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

If you wanna know a little more about the other millions, find out what an "Exoplanet" is. One of which that has grown in popularity is Gliese 581c. This exoplanet is considered a "super-earth" and may have the ability to sustain liquid water.

Answer 5

I've always taught

My very easy method just speeds up naming planets

My - Mercury
Very - Venus
Easy - Earth
Method - Mars
Just - Jupiter
Speeds - Saturn
Up - Uranus
Naming - Neptune
Planets - Pluto (not a planet anymore)

Answer 6

Orbiting our sun, there are 8: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
There are some minor or "dwarf" planets as well - Pluto, Ceres, and Sedna.

We know of 258 planets orbiting other stars as well.

Answer 7

impossible to answer except for our solar system and you already have that answer. Planets are very very common so the number is gonna be huge........well into dozens or hundreds of millions just in our galaxy alone i would think......thats bearing in mind that a star can have many planets and if only 10% of stars had planets......work it out for yourself....

Answer 8

8 officially now - it was 9 until they downgraded Pluto!

Mercury, Venus, Mars, Earth, Jupiter, Saturn, Uranus & Neptune

Answer 9

I expect you mean the one's we already know about. Here's where you'll find all the details -
http://en.wikipedia.org/wiki/Planets

Answer 10

What's memy?