Our solar system has Ceres, Pluto, Eris, Haumea, and Makemake as dwarf planets. A dwarf planet is smaller than a planet had has an orbit that is not clear.
Dwarf planets is a new designation.
Pluto is colder than any of the planets in our solar system because it is further away from the sun than the planets are. However, Pluto is the second warmest dwarf planet, after Ceres.
While none of the objects currently recognized as dwarf planets are as massive as any of the true planets of the solar system, they are still massive objects with substantial gravity, strong enough to keep a moon or several in orbit.
No, a dwarf planet is not a moon. A moon is a body which orbits a large body. However, dwarf planets don't orbit any larger bodies and just orbit the sun in their solar system. Most dwarf planets are failed planets that were forming, but were to close to a gas giant whose gravity messed up the formation of the planet.
They could, but as of now, no astronauts have travelled to any other planets in the solar system.
There will definitely be more dwarf planets. It's unlikely we will find any more major planets in our solar system, though unless they are in some far flung unusual orbits with a low albedo. The possibility exists however.
Pluto and the dwarf planets
None that are known. Earth is the only place in the universe known to have life and it is highly unlikely that any of the dwarf planets in our solar system have any life.
no but Eris isn't a planet it is a dwarf planet.
Pluto was classified as a dwarf planet last 2005. Pluto was too small to be considered as a planet anymore. Its orbit was also not like any of what we call our planets. There are three dwarf planets in our solar system.
Pluto is colder than any of the planets in our solar system because it is further away from the sun than the planets are. However, Pluto is the second warmest dwarf planet, after Ceres.
None. By definition , our "solar system" is everything controlled by the gravity of our sun. The planets, their satellites, asteroids, dwarf planets, comets, interplanetary dust, and man-made satellites are "within" our solar system. Any "planet" outside out solar system is just that - OUTSIDE of it.
Pluto is not a star. It is a dwarf planet, though planets in our solar system may resemble stars when seen by the naked eye. Pluto is the coldest planetoid in our solar system, though there may be colder planets and dwarf planets in the universe. Pluto is indeed colder than any star.
In any solar system; that's what planets do.
Not in our solar system. In fact the scientific community recently reduced the number of planets in our solar system by reclassifying Pluto as a Dwarf Planet. As for other solar systems, yes, there are still new planets being discovered; Often enough that the discoveries don't even usually rate any mention in mainstream news media.
Venus and Mercury are the only planets in the Solar System that do Not have any moons. Even Pluto, a dwarf planet, has a moon.
While none of the objects currently recognized as dwarf planets are as massive as any of the true planets of the solar system, they are still massive objects with substantial gravity, strong enough to keep a moon or several in orbit.
Mercury and Venus are the only two major planets in our solar system without moons. They are the two planets closer to the Sun than Earth.Two of the five dwarf planets have no known moons : the asteroid Ceres and the Kuiper Belt object Makemake.Neither Mercury nor Venus have any moons.