there are billions.. because the true definition of planet is every thing that floats and wandering around the universe or surrounding the sun is considered a planet.. but if you are talking about planets in our Solar System, there are 8 Pluto is just a former member of the solar system.
14
Ptolemy did not discover any planets. He lived in the 2nd century AD and his work primarily focused on developing mathematical models to explain the motion of the planets as observed from Earth. The discovery of the planets we now know was made by astronomers in different time periods.
There are many more! Just like we always discover new planets, we are always discovering new elements, too.
no they have not
Within our solar system, there are 8 planets, and 4 dwarf planets. There are also over 500 dwarf planets from 2 galaxies that have been discovered orbiting other stars.
they were discovered millions and millions of centuries ago and no use of thinking about it now,instead we can try to discover many other planets at present
It's unknown. We didn't discover a planet with water, and oxygen.
generally the men who discover them.
there is lots of things in space like the astirod belt and many planets to discover . maby even life.
Johannes Kepler
Telescopes have helped discover many things in space that are not visible such as some of the outer planets of our solar system.
THEY DISCOVOR STUFF like stars and planets