Are There 8 Planets? Are There 9 Planets? How Many Planets are in Our Solar System?
There are 8 known planets in our solar system with indirect evidence of a 9th planet found in 2016. There are five major dwarf planets including Pluto and many smaller dwarf planets. Beyond these, there are also a large number of dwarf planets or smaller objects we have yet to find observable evidence of.
A New Planet In Our Solar System? NASA Takes A Look.
FACT: We have observed indirect evidence of Planet X (or planet 9), the 9th planet (since Pluto was demoted to dwarf planet). According to the Science magazine video below (not the NASA video above). There is about a 1 in 1,000 chance that the indirect evidence is wrong. We may be able to confirm direct evidence in the next 5 years. Until direct evidence of a 9th planet is observed there are only 8 planets we have direct evidence of in our solar system as of 2016 (Pluto isn’t a planet and we haven’t yet confirmed Planet 9).
The “Traditional Planets” 8 Planets in Our Solar System
The sun is a star. From the sun outward we have: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Pluto the Old 9th Planet (Now Dwarf Planet) and Other Dwarf Planets
We used to think that Pluto was a planet, but now we know it’s actually a dwarf planet.
A dwarf planet is, in simple terms, a planet-like object that doesn’t meet the definitions of planet or satellite, a smaller space object. It is in direct orbit around a star, is big enough to be rounded by its own gravity, but lacks sufficient mass to behave like a planet in all respects.
About the dwarf planets with SciShow Kids.
Planet-X – The New 9th Planet
In early 2016 two astronomers indirectly detected Planet X or Planet 9 (called that because we can’t name it until we can prove it exists and will be the 9th known planet). They published their findings on January 20th, 2016).
The astronomers found indirect evidence of the existence of planet nearly the size of Neptune, which orbits the sun every 15,000 years in a giant elliptical pattern. The evidence centers on a gravitational pull on the orbit of other objects in the solar system that suggests a planet exists that we have not yet seen. From the evidence, the astronomers concluded that the “planet” may have been knocked away from the sun during the sun’s infancy 4.5 billion years ago settling into an orbit beyond all the traditional planets where it probably is today.
We don’t have direct evidence of the planet yet, but we could find out soon if there is an official new planet 9.
Astronomers present strong evidence for Planet X.
FACT: There may not be more than 8 known planets in our solar system, but there are WAY more than 8 planets in our galaxy and in the rest of the universe. There are about 200 and 400 billion stars and at least 100 billion planets in the galaxy and, at least, one hundred billion galaxies in the observable universe.
How do we know how many galaxies there are in the Universe?