The OTHER effect of time dilation that isn't being mentioned: the rest of the universe is not accelerating with you, so it doesn't experience time dilation.
Along your trip you will see stars turn red, sometimes flashing white and blinking out, but sometimes just fading away.
Your civilization will without a doubt go extinct.
If you are exceedingly lucky, you may see other civilizations of other species arise... but you'd need very high energy receivers in front of you, or deep infrared receivers behind, and of course be staring at the right place to see the signs.
You may eventually begin to notice the revolving motion of galaxies. After that, if you continue, you'll see galaxies collide. By then your planet will have been dead for longer than it was a planet when you left it.
Along your trip you will see stars turn red, sometimes flashing white and blinking out, but sometimes just fading away.
Your civilization will without a doubt go extinct.
If you are exceedingly lucky, you may see other civilizations of other species arise... but you'd need very high energy receivers in front of you, or deep infrared receivers behind, and of course be staring at the right place to see the signs.
You may eventually begin to notice the revolving motion of galaxies. After that, if you continue, you'll see galaxies collide. By then your planet will have been dead for longer than it was a planet when you left it.