Because a wizard told them.
Planet X does not exist. The idea of planet X was introduced because of discrepancies in the orbit of Uranus that led some scientists to think the gravity of another, undiscovered planet was pulling on it. The discrepancy was later found to be due to a small error in the estimated mass of Neptune.
Not really. Planet X was a provisional name used to refer to a possible but unnamed planet beyond the planets known at the time. Pluto once held this title. No object currently holds it.
Astronomers began searching for Planet X to explain discrepancies in the orbits of Uranus and Neptune. Observations indicated the presence of an unknown massive celestial body affecting the orbits of these planets.
i don't know i think 4.868 x 1024kg
Planet X was a hypothetical planet which was searched for after the discovery of planet Neptune. `Planet-X` does not exist.
No where, it is not real.
No where because it is not real.
Planet X is a hypothetical planet beyond Neptune that has been proposed to exist in the outer reaches of our solar system. It has not been directly observed, but its existence has been theorized to explain anomalies in the orbits of outer planets. Scientists are still searching for evidence of such a planet.
It actually does not mean anything. Scientists use it to describe a planet that: a) Should be there or b) Has been discovered but not named
It isn't real.
(Actually there is one planet, That we think), we've found an objectabout 180,750,767 miles away from Pluto named Planet X .Is it real?Yet we do not know. if you know call the DIA\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
Planet X does not exist. The idea of planet X was introduced because of discrepancies in the orbit of Uranus that led some scientists to think the gravity of another, undiscovered planet was pulling on it. The discrepancy was later found to be due to a small error in the estimated mass of Neptune.
Generally, Planet X is an undiscovered planet in our solar system. Pluto was "Planet X" until it's discovery in 1930. Scientists postulate the existence of a Planet X by noting irregularities in the orbits of other planets. Now, Pluto and anything past it discovered so far are known as dwarf planets. There maybe another planet somewhere past Pluto, but I believe Planet X now refers to extra-solar planets.
Don't think so. Some scientists think that but others thought it was just a really big meteorite.
People don't know that yet, but in the science magazine they said there might well be a planet X!
No there is no such thing as planet x. It is just a made up thing. OK this is a new person now and planet x is real but it is usually called The Destroyer. oh and it exists but its not going to ruin the world or whatever!
Not really. Planet X was a provisional name used to refer to a possible but unnamed planet beyond the planets known at the time. Pluto once held this title. No object currently holds it.