Well, we know there is human life on Earth, but no human life on any planet we have visited so far. There may be non-human life elsewhere in our solar system, more like bacteria. maybe underground at Mars or under ice in Europa. Humans are fairly specialized to live on Earth. Intelligent creatures on a planet around another star may look nothing like us, since their environment may be very different. Most of the planets around other stars that have been discovered so far are very very hot. What do you think a creature would look like that had to live near the boiling point?