By robotic probes.
who explored the solar system
Besides Earth, yes.
Voyager I and Voyager II although they were not planned to.
Unless someone forgot to send me the memo, We only have one star in our solar system. Its called Sol, or the sun.
Solar Storm - 2015 was released on: USA: 2015
Gravity is the force that holds our Solar System together. It allows planets and moons to keep their elliptical orbits around the Sun. Even though humans have explored only a small portion of space, we know that our Solar System orbits the center of the much larger Milky Way galaxy. Without gravity, our Solar System would not be able to maintain this orbit.
The most distant objects in the Solar System are probably comets. However, as that region of space has not been explored, there could be anything out there, even another planet.
Solar Storm Project - 2015 was released on: USA: 2015
Jupiter is the next planet after Mars, but there is small minor planets in between that's within the asteroid belt, with best known been ceres, expected to be explored by the Dawn Spacecraft in 2015.
because if you travelallthe way out of the solar system then by the time you got back you would of died from the intense coldness or thespace ship would lose power before you reached the destination
Besides Earth, mars is the most explored planet.
That's rather a difficult question. Since we have explored so few planets, we have no way of making a totally accurate statement. It is presumable that the further away from the sun a planet is, the colder. By this logic, it can be said that Sedna is the coldest body in the solar system. However, since we have not explored the Oort Cloud, we cannot make a more informed estimation or measurement.