How many planets do we have in our solar system?
Question:
Answer:
According to the authority of the IAU, there are nine planets in our solar system. In increasing distance from the Sun they are (with the astronomical symbol in brackets):
Mercury (☿)
Venus (♀)
Earth (♁) with one confirmed natural satellite, Luna (the Moon)
Mars (♂) with two confirmed natural satellites, Phobos and Deimos
Jupiter (♃) with sixty-three confirmed natural satellites
Saturn (♄) with forty-six confirmed natural satellites
Uranus () with twenty-seven confirmed natural satellites
Neptune (♆) with thirteen confirmed natural satellites
Pluto (♇) with three confirmed natural satellites, Charon, S/2005 P 1 and S/2005 P 2
However, there is some pressure for Pluto to be reclassified as a Kuiper Belt object, especially in light of the discovery of 2003 UB313. This object, however, has not yet received a definitive classification from the IAU.
Sedna was widely touted as a planet when it was discovered in 2003, as it was the largest object found since Pluto. However, mainly due to its size still being smaller than Pluto's, it did not achieve planetary status from the IAU. However, the discovery in 2005 of 2003 UB313 (nicknamed Xena), with a size and mass larger than Pluto seems to have forced the issue. As of January 2006 it has not yet been accepted as a planet, but the IAU is expected to announce a definition of a planet soon, which will likely either see 2003 UB313 become a planet, or have Pluto stripped of its status.
1. Mercury
2. Venus
3. Earth
4. Mars
5. Uranus
6. Saturn
7. Jupiter
8. Pluto
I believe there are 10 known planets in our solar system. The last one, Planet 10 (or Planet X, in Roman digits) was discovered some three or four years ago by means of mathematical calculations and observation of gravitational forces, otherwise unaccounted for, between the already known planets. To my knowledge, the 10th Planet has yet to be observed via a telescope or interferometer.
9 planets ( n a planet known as planet x! so it is ten!
the most widely recognized is nine but there was a big fuss a couple of years ago about the possibility of there being a tenth planet, but it was widely refuted on the basis that there is so much debris in our solar system that it could possibly be just another meteor out there or asteroid not but a little smaller than pluto
9
We have nine planets in our solar system which are: Mercury,Venus, Earth,Mars, Jupiter, Saturn,Venus,Uranus,Pluton.
Some people say nine.
I also heard some other people say 10.
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