Answer: I would guess sun-centered
Explanation: If you search on the internet the definition of heliocentric you will get
having or representing the sun as the center, as in the accepted astronomical model of the solar system.
so that but in basic terms I would think it's sun-centered.
I'm not 100% sure but I'm making my best educated guess. Please Let me know if it was correct.
An artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study. It serves as an original source of information about the topic.
“The Washwoman,” Singer recalls the woman who did his family's laundry when he was a child in Poland. Singer never forgets her courage and endurance. She was a woman of integrity and self respect who walked for miles to pick up and deliver laundry in order to earn money for her family.
hope this helps :)
The reason may be to show the reader that this is important and to give the word an emphasis. It also gives the reader a feeling of someone being watched just 'perching above my chamber door".