history: I think there has to be extraterrestrial life out there somewhere.  We cant be alone in the universe.
knowledge: Extraterrestrial life, also called alien life (or, if it is a sentient or relatively complex individual, an ''extraterrestrial'' or ''alien''), is life that occurs outside of Earth and that probably did not originate from Earth.
response: That's an interesting thought. So you think there's life that did not originate from Earth?
history: I think there has to be extraterrestrial life out there somewhere.  We cant be alone in the universe.
That's an interesting thought. So you think there's life that did not originate from Earth?
Yes, I do. There are so many planets out there. There has to be some sort of life on them, right?
knowledge: These hypothetical life forms may range from simple prokaryotes to beings with civilizations far more advanced than humanity.
response: I wouldn't know. What I can say is that this hypothetical life could be as simple as prokaryotes or way more advanced than humans, or anything in between.
history: I think there has to be extraterrestrial life out there somewhere.  We cant be alone in the universe.
That's an interesting thought. So you think there's life that did not originate from Earth?
Yes, I do. There are so many planets out there. There has to be some sort of life on them, right?
I wouldn't know. What I can say is that this hypothetical life could be as simple as prokaryotes or way more advanced than humans, or anything in between.
Yeah, if they could contact us, they'd probably be very advanced. Hopefully they would be friendly. I'm afraid I have no idea how we would do against a war with aliens!
knowledge: Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial life.
response: People have been looking for signs of extraterrestrial life since the mid-20th century. If they are out there, why can't we find them?
history: I think there has to be extraterrestrial life out there somewhere.  We cant be alone in the universe.
That's an interesting thought. So you think there's life that did not originate from Earth?
Yes, I do. There are so many planets out there. There has to be some sort of life on them, right?
I wouldn't know. What I can say is that this hypothetical life could be as simple as prokaryotes or way more advanced than humans, or anything in between.
Yeah, if they could contact us, they'd probably be very advanced. Hopefully they would be friendly. I'm afraid I have no idea how we would do against a war with aliens!
People have been looking for signs of extraterrestrial life since the mid-20th century. If they are out there, why can't we find them?
I just think they are all so far away and nobody has the technology to get from one place to another.  I mean...the mars trip alone would be a couple months right?  Can you imagine living on a space ship going to another planet for years?  It would be hard to survive that trip!
knowledge: Depending on the category of search, methods range from the analysis of telescope and specimen data to radios used to detect and send communication signals.
response: I'm not sure how long a Mars trip would take. That said, there are several methods being used to search for aliens, including telescope data and using radios to send and receive signals.
history: I think there has to be extraterrestrial life out there somewhere.  We cant be alone in the universe.
That's an interesting thought. So you think there's life that did not originate from Earth?
Yes, I do. There are so many planets out there. There has to be some sort of life on them, right?
I wouldn't know. What I can say is that this hypothetical life could be as simple as prokaryotes or way more advanced than humans, or anything in between.
Yeah, if they could contact us, they'd probably be very advanced. Hopefully they would be friendly. I'm afraid I have no idea how we would do against a war with aliens!
People have been looking for signs of extraterrestrial life since the mid-20th century. If they are out there, why can't we find them?
I just think they are all so far away and nobody has the technology to get from one place to another.  I mean...the mars trip alone would be a couple months right?  Can you imagine living on a space ship going to another planet for years?  It would be hard to survive that trip!
I'm not sure how long a Mars trip would take. That said, there are several methods being used to search for aliens, including telescope data and using radios to send and receive signals.
I heard that they thought they picked something up before and nobody knew what it was. It turned out to be the microwave a couple floors up.
knowledge: The concept of extraterrestrial life, and particularly extraterrestrial intelligence, has had a major cultural impact, chiefly in works of science fiction.
response: Wow. So, the idea of alien life has inspired a lot of human culture, especially in science fiction works.