Epsilon Eridani B is 10.4 light year away. There may be closer planets yet--I just glanced at the first half dozen in the exoplanet catalog.
http://www.planetary.org/exoplanets/list.php?exo=Epsilon+Eridani+b
CoRoT-Exo-1 B is about 1500 light years away, making it one of the furthest detected so far.
There are eight planets in the solar system, but the planet closest to the sun is Mercury.
The first planet in the solar system is Mercury
Mercury is the planet closest to the sun in our solar system.
Mars is the fourth closest to the Sun in our solar system.
Mercury is the smallest planet in our solar system and is closest in size to the Sun.
Mercury is the planet in our solar system that is closest to the sun.
Mercury is the closest planet to the sun in our solar system.
The closest planet to the sun in our solar system is Mercury.
The planet closest to the sun in our solar system is Mercury.
The planet closest to the sun in our solar system is Mercury.
The planet closest to the sun in our solar system is Mercury.
The closest planet to the sun in our solar system is Mercury.
Mercury is the closest planet to the sun in our solar system.
The first planet closest to the sun in our solar system is Mercury.
The first planet closest to the sun in our solar system is Mercury.
A planet found outside of our solar system is called an "exoplanet" or "extrasolar planet"
Earth is the third closest planet to the sun.