Till date how many planet are known to us?

Answer 1

Orbiting our Sun (in our Solar System), there are 8 planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. There are also 3 dwarf planets, Pluto, Eris and Ceres. However, there are over 200 planets discovered orbiting other stars but most of these are larger than Jupiter and are very close to their star, making them likely uninhabitable.

Answer 2

There are 8 planets in our solar system. These planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

In the past our solar system was known to exist of 9 planets but recently, scientists have hypothesized due to further research that Pluto is not a planet, but instead a dwarf-planet.

Answer 3

There are 8 planets in the solar system. They are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
There are dwarf planets as well. The most famous of these is Pluto, which has recently been downgraded as a dwarf planet from a planet. The others are Ceres, Eris, Charon, Sedna and Xena.
Other than that, there is also a planet of the star AB Pictoris. This planet has not been named.

Answer 4

11 or 12 or 10

Answer 5

I've heard that the scientists have downgraded Pluto from a planet to just a rock orbiting the earth but have found three others which are about the size of earth, a little bigger but they have been commissioned as planets. Go to ask.com and find out more.

Answer 6

Until recently, the answer was a clearcut "nine".

However, the definition of "planet" has been debated and changed twice in the past year, and now the number is officially eight.

Check for news about Pluto -- the planet that was downgraded -- and you'll be filled in quickly.

Answer 7

Eight (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune) as stated by a recent astronomers agreement (Praga meeting, august 2006) to precisely define the terms of solar system bodies, now that a lot of are known and will be known thank to probes, telescopes, etc. Here down are the specs:

RESOLUTION 5A
The IAU therefore resolves that planets and other bodies in our Solar System, except satellites,be defined into three distinct categories in the following way:

(1) A "planet"1 is a celestial body that
(a) is in orbit around the Sun,
(b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and
(c) has cleared the neighbourhood around its orbit.

(2) A "dwarf planet" is a celestial body that
(a) is in orbit around the Sun,
(b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape2,
(c) has not cleared the neighbourhood around its orbit, and
(d) is not a satellite.

(3) All other objects3, except satellites, orbiting the Sun shall be referred to collectively as "Small Solar System Bodies".

1The eight planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
2An IAU process will be established to assign borderline objects into either dwarf planet and other categories.
3These currently include most of the Solar System asteroids, most Trans-Neptunian Objects (TNOs), comets, and other small bodies.

RESOLUTION 5B
Insert the word "classical" before the word "planet" in Resolution 5A, Section (1), and footnote 1. Thus reading:

(1) A classical "planet"1 is a celestial body . . .

and
1The eight classical planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Answer 8

there is not any planet Niburu. that is a hoax. the individuals who have self assurance this are suckers who in a diverse technology ought to were paying for gold bricks and stocks contained in the Brooklyn Bridge. If NASA can not conceal that some their astronauts are drunks and yet another a should be assassin, how do you imagine they could save this secret? the easy answer is that there is not any secret. it really is one among numerous astronomically appropriate hoaxes floating around the internet, the others being the Mayan lack of life date of 12/21/12, that there grow to be no Moon landing, and paying for a action picture star or the right to call one.

Answer 9

11 planets

Answer 10

known so far 9. unnamed but discovered 1.Total 10.

There are 100s of unknown planets.