The Universe is Filled With Mysteries

It is undeniable that the universe is filled with mysteries.

Unless scientists and technology in the future become so advanced that we can effectively study the universe just like in movies, TV shows, fiction books, and video games.

But it does make me wonder.

Is there life somewhere else in the universe?

Do aliens from outer space exist?

How can the universe always be expanding?

Is time travel possible?

Is traveling back to the past possible?

I've heard very interesting things arguing that time travel is possible.

Why does this universe exist?

Why do human beings exist?

Why do we suffer in life?

There are some people who have specific, detailed memories of a past life. How is that even possible?

They claim they had a previous life. And they have very detailed accounts.

Things that it is impossible for them to know.

But somehow they know.

Family members or people who knew the previous person, they confirm the details.

People who miraculously survived and fully recovered from injuries, violence, and accidents.

It just makes me wonder.

Why are there so many mysteries and interesting things in the universe?