None, as far as we know. All human life resides on earth, and has not even visited another planet,
let alone a star or galaxy.
No. Never been visited by humans.
Nobody has ever visited the Milky Way. Earth is in the Milky Way. Every human who has ever lived has spent their entire life in it.
Yes. Scientists haven't been able to explore other galaxies. I believe that there is life in other galaxies just like Earth. but how do they explore galaxies? i mean how do they know there are other galaxies? do they have any proof of lik=fe on other galaxies? ^^^^^^^
There is no scientific evidence to confirm that Earth has been visited by aliens. Many reported sightings and encounters can be attributed to natural phenomena, human-made objects, or misinterpretations. The search for extraterrestrial life continues, but as of now, no conclusive proof of alien visits to Earth exists.
No, only a few unmanned spacecraft have visited Venus. A manned flyby mission was planned by the US in the 1970s following the successful moon landings of the Apollo program, but it was cancelled.
There are good statistical reasons to expect that life does exist in other galaxies than our own, and other star systems than our own even within our own galaxy, but this is speculation only, since we have no direct observation of any such life. So far, life has been observed on Earth only.
Traces of human life has been found on every corner of the globe. Including in the poles.
No. Only the Earth can support human life. Our moon has been visited by man but it has none or a miniscule atmosphere. All of the other planets (and moons) are too hot or too cold to support mankind.
It is not known and never will be known. Other galaxies are too far away for us to find if they have life in them. So far earth is the known only place in the universe to hold life.
No, it is a statement, but there is a hypothesis that there is life in other galaxies, or even outside the solar system but in our own galaxy, but it can't really be described as scientific because no evidence has ever been found.
To know what is the life there, and if there's any other creatures or "aliens". some scientists are looking for planets with water and life on them.
They study distant galaxies because they want to know whats out in other galaxies and how many planets it has