Parallaxes of stars were not observed by ancient astronomers. how can this fact be reconciled with the heliocentric hypothesis?

Explanation:

The heliocentric hypothesis states that Earth moves around the Sun. Since the Earth moves, the star background should experience parallax, in a similar way a person notices parallax in the trees while moving in a forest.

However parallax in stars was not observed by ancient astronomers, not because it doesn't exist, but because it is too small to measure.

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.

d.7.5cm is your answer