We don't know if there is life on other planets or not. Most scientists suspect that there probably is life somewhere in the Universe other than Earth, but we've never found any yet.
one question is, is there life (like aliens) on other planets? another, is there more than one universe?
Yes, there was recently discovered forms of ancient life on mars that looked like dinosaurs
We live on Earth, aliens live on Pluto, Mars, and other planets like Jupiter.
There are probably a billion stars in our galaxy, and probably a billion galaxies in the universe. We already know what there are planets orbiting many other stars; if there are planets around only 1% of the stars, that's still 100 billion planets. If only 1% of those planets are habitable, that's a billion habitable planets. If only 1% of those planets HAVE life, that's 10 million planets with life. If only 1% of the planets that have life have highly-developed life forms, then there are 100,000 planets with highly developed life forms. If only 1% of those planets have intelligent life, that's still 1,000 planets in the universe that have intelligent life; "aliens". We have NO IDEA if there are any other planets that have life, or intelligent life in the universe, or if those aliens - if any exist - might be willing or able to communicate with us. But I would like to think so.
No
There is currently no definitive evidence of aliens on other planets. Scientists are actively searching for signs of extraterrestrial life through projects like the Search for Extraterrestrial Intelligence (SETI), but as of now, we have not found concrete proof of alien existence.
No other planets have "creatures" like earth does. There might be microbes or bacteria on other planets. Some scientists believe there could be life as advanced as something like a Jellyfish on Titan, one of Saturn's moons. There is no evidence of very advanced life on any planets other than earth, however.
The presence of real extraterrestrial life has, as of yet, not been identified in our universe with exact measures. Therefore, it is currently impossible for humans to tell whether aliens need water, like humans do, to survive. However, there are many speculations on the biological structure of aliens. Some of these guesses are shaped like humanoids, others not. Obviously, though, we can't identify any as being wrong or right just yet (although some ideas are just crazy). We have also been successful in finding planets that are capable of sustaining not just any life, but HUMAN life other than our own. These planets are far away, however, and the immense distance of space keeps us from determining whether there are really humans, or any life, on these planets. If there are, however, they could be classified as "aliens" to us, and they would most likely need water like we do. Who knows?
The appearance of aliens is purely speculative, as there is no concrete evidence of their existence. However, popular culture often portrays them as having distinct features such as large heads, big eyes, and slender bodies.
There is no definitive evidence of life in any other planets in our solar system. However, scientific exploration continues to search for signs of potential microbial life on planets like Mars or icy moons like Europa and Enceladus.
at the present, we do not know if there is life on other planets or what it would look like if there was
It has not been clear that there is alien life.