Let's assume we have two observers one is on Earth and the other one is inside a spaceship with relativistic speed.
Would the time inside the ship slow down while also the spaceship is getting shorter for an observer on Earth?
Most of the examples I saw online are referring to the relation of time dilation for one observer and the length contraction for the other one (ex; Muons reaching the Earth). But can one single observer, observe both time dilation and length contraction at the same time?
I feel like he/she can but usually, the problem does not require us to calculate them both therefore I couldn't find any examples.
Thanks for the replies.