Brian
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“I myself have dreamed up a structure intermediate between Dyson spheres and planets. Build a ring 93 million miles in radius - one Earth orbit - around the sun. If we have the mass of Jupiter to work with, and if we make it a thousand miles wide, we get a thickness of about a thousand feet for the base.
And it has advantages. The Ringworld will be much sturdier than a Dyson sphere. We can spin it on its axis for gravity. A rotation speed of 770 m/s will give us a gravity of one Earth normal. We wouldn't even need to roof it over. Place walls one thousand miles high at each edge, facing the sun. Very little air will leak over the edges.
Lord knows the thing is roomy enough. With three million times the surface area of the Earth, it will be some time before anyone complains of the crowding.”
―
And it has advantages. The Ringworld will be much sturdier than a Dyson sphere. We can spin it on its axis for gravity. A rotation speed of 770 m/s will give us a gravity of one Earth normal. We wouldn't even need to roof it over. Place walls one thousand miles high at each edge, facing the sun. Very little air will leak over the edges.
Lord knows the thing is roomy enough. With three million times the surface area of the Earth, it will be some time before anyone complains of the crowding.”
―
“Ethics change with technology.”
― N-Space
― N-Space
Star Trek Reads
— 499 members
— last activity Jun 27, 2026 12:12PM
Star Trek has spanned a lot of books since the first one in the 60s: 14+ series, 12 mini-series, ebook short stories, novelizations, comics... They al ...more
Space Opera Fans
— 5650 members
— last activity 2 hours, 38 min ago
If you like space opera: an epic scale adventure through the galaxy with military battles, interplanetary politics, realistic interpersonal relationsh ...more
Romance For Men
— 367 members
— last activity May 16, 2026 12:12PM
The RFM community is for the romance media men like to consume! With the majority of romance books and films being written for women, this group exist ...more
Brian’s 2025 Year in Books
Take a look at Brian’s Year in Books, including some fun facts about their reading.
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Biography, Classics, Fantasy, Fiction, Graphic novels, History, Horror, Manga, Music, Non-fiction, Philosophy, Science, Science fiction, and Thriller
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