Question

What lies beyond the observable universe?

Answer 1

No one can definitely give you an answer for this unless we find it out through observations .....

Scientists are still on the search of new planets and stars

Answer 2

$<font color = pink> Answer$

Some parts of the universe are too far away for the light emitted since the Big Bang to have had enough time to reach Earth or its scientific space-based instruments, and so lie outside the observable universe.