Category Archives: technology

Interstellar Comets and Other Recent Space Happenings

These are notes from a presentation by Bill Higgins and Henry Spencer at Capricon 46. Any mistakes here are mine, not the speakers’. I have amplified my notes with web links for further clarification. Here is the blurb from the convention program:

Bill and Henry fill you in on recent developments in space, starting with a look at the latest interstellar comet, Comet 3I/ATLAS (as seen mostly by spacecraft).

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Killer Asteroids, and What We Might Do About Them

These are notes from a presentation by Henry Spencer at Capricon 46. Any mistakes here are mine, not Henry’s. I have amplified my notes with web links for further clarification. Here is the blurb from the convention program:

Near-Earth asteroids (and their cousins, comets) are interesting objects, possible future sources of metals and other materials… and potential threats to civilization and even life on Earth. The good news is, this is the only type of major natural disaster that we might actually be able to prevent. A look at what we know about asteroids (and comets), what sort of threat they present, and what we can do to anticipate trouble from them and maybe head it off.

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The Politics of Future Tech

These are notes from a panel at Capricon 46. Any mistakes here are mine, not the panelists’. I have amplified my notes with web links for further clarification. Here is the blurb from the convention program:

As the means of production falls into fewer and fewer hands and new technologies like GenAI arrive on our phones with unseen agendas and impacts, the value of thinking about the political dimensions of future tech grows. What political ramifications should we consider in our near future? How has SF commented on the politics of its futuristic technologies? Our panelists explore these and other political questions about the future we’re building now (and the future still to come).

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Atomic Bombs 101

These are notes from a presentation by Henry Spencer at Capricon 46. Any mistakes here are mine, not Henry’s. I have amplified my notes with web links for further clarification. Here is the blurb from the convention program:

The real history and technology (so far as they’re publicly known) of nuclear weapons, and the ways SF gets them wrong — aimed at authors, techies, and interested readers.

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Powering the Space Elevator

Notes from a presentation by Larry Bartoszek at Capricon 45, Chicago, Feb. 8, 2024. Any mistakes are mine. The speaker is not responsible for any errors here.

A recent International Space Elevator Consortium (ISEC) study showed that a 20 ton Space Elevator climber needs tens of megawatts of electrical power to begin climbing from the surface of the Earth, but the power required falls off as 1/r2, as gravity does. This talk will look at options for delivering the large amount of power to get started and the design of a laser power beaming system to power the climber at higher altitudes. Non-laser options will also be discussed.

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