An advanced civilization is found on a planet 1000 light years away. If we send out a radio wave today, what is the minimum amount of time it would take for us to hear back neglecting the relative motion between the planet and the Earth?

2000 light year

Explanation:

Advanced civilization is 1000 light-years away

1  light-year is the distance traveled by light in 1 earth year i.e. 365 days  with the speed of light i.e.

If civilization is 1000 light-years away then it would take 1000 year  to reach there and another 1000 year to come back to earth (If all other factors remain constant)

So totally it would take 2000 light-year to hear out the radio wave.

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

15.3 cos 65 degrees trig