Is time travel possible?

Is time travel a possibility? According to Scientific research, time travel is more of an opinionated question. Some research proves that there are possibilities of time travel and others say that it is impossible. In my opinion, I think it is possible with right research and advanced technology for time travel to be possible. If time travel is invented, and someone did come back in time from the future, and change things without making themselves widely known as time travelers, it is possible that if it was changed in the past, then it changes all the time from that point up to the present. Therefore, making all of our memory and forms of history of the event correlate with the change that was made. The slight problem with time travel would be that if someone in the future invents time travel and then goes back in time to where time travel wasn’t invented yet, then would it be possible for them to get back? If there time machine did still work what would they to with this opportunity to travel freely through time? Would they just travel and observe, visit there ancestors, some travelers might even use it ti figure out more on our nations history. If I could travel pack in time i would try learning more about different eras in time. I would also use it to see my family when they were younger. What about traveling into the future? Would it even be possible to travel into the future? People allays say the future isn't definite. If it was possible to travel into the future it wold probably change every time you traveled depending on the different choices people make. If i could travel into the future, even if it was always changing, i would most likely use the opportunity to look at the scientific advancements. I would see if we have discovered aliens, what we did when we discovered them, are they nice or scary, and so many other questions. I would also look at the advancement in technology like cell phones, computers and cars. Also all the new inventions made over time.

So if time travel was invented, and the time travelers were careful enough not to make any major changes, and figured out how to safely travel throughout time, it would be very possible that time travelers have been around forever without our knowing.