The known coolest planet in outer space is PLUTO.
these are all of the outer planets in outer space: jupiter, saturn, uranus, neptune, and pluto
to Mars
A small solid body that enter's a planst's atmosphere from outer space is called Meteor...
You can go to many planets
it is a maybe, Stephen Hawkings is one of the smartest people on the planet and warned us about the possibilities that aliens from outer space might harm us ! That is not my answer it is Stephen Hawking's.
space
these are all of the outer planets in outer space: jupiter, saturn, uranus, neptune, and pluto
Outer space is outside the Earth, not anywhere on the surface of this planet.
Pluto is the coldest planet is the Solar System.Pluto's average temperature is - 254.
viking 1 was sent in outer space is to study planet from surfaces.. it was sent and landed at Mars and studied the surface of the planet... :)
no mars is an inner planet
To hold our planet, The Earth.
They are Planet Neptune,Planet Uranus and Planet Pluto.
sirius (dogstar)
About 100 miles.
to Mars
I'm not exactly sure what you mean by outer planet... But it is a planet in outer space. Astronauts have been trying to see if there's been life on Mars. They've had space robots go up and take pictures. Hope I helped! =)