Why are there 8 planets in the solar system?

“I have announced this star as a comet, but since it is not accompanied by any nebulosity and, further, since its movement is so slow and rather uniform, it has occurred to me several times that it might be something better than a comet. But I have been careful not to advance this supposition to the public. read more

Earlier there were 9 planets in our solar system. But due to new definition of planets , which was given by IAU( international Astronomical union society) in August 2006. read more

“Ceres is a planet, and our solar system does not have only 8 planets, at least according to the equally legitimate geophysical planet definition” Ceres is not a planet, and our solar system has 8 planets discovered so far. read more

The other answer is that once there were a gazillion planet-like things in the solar system, which collided and combined, and the 8 known planets (plus dozens of dwarf planets, 100+ moons, several belts of gravel and possibly one or two planets that we haven’t discovered yet) are what’s left from that time. read more

Three of the planets in the solar system are currently visible in the night sky in June 2017. They are: Venus, Jupiter and Saturn. read more