October 2014

Replenishing a Proto-Planetary Disk

October 31, 2014

Because building an economically sustainable infrastructure in the Solar System is crucial for the development of interstellar flight, I was interested to learn about a game called High Frontier, which looks to combine O’Neill habitats with a steady expansion of our species outward. Have a look at the Kickstarter campaign page if the idea of […]

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A Test Case for Astroengineering

October 30, 2014

Last year the New Frontiers in Astronomy & Cosmology program, set up by the John Templeton Foundation as a grant-awarding organization, dispensed three grants with a bearing on what Clément Vidal calls ‘Zen SETI.’ The idea of looking into our astronomical data and making new observations to track possible signs of an extraterrestrial civilization at […]

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Examining SETI Assumptions

October 28, 2014

If we’re trying to extend the boundaries of the search for extraterrestrial intelligence, how do we proceed? A speculative mind is essential, and one of the delights of science fiction is the ability to move through an unrestricted imaginative space, working out the ramifications of various scenarios. But we have to prioritize what we’re doing, […]

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The Zen of SETI

October 27, 2014

The SETI challenge has often been likened to archaeology, and for good reason. In both cases, we are trying to recover information about cultures from the past. When Heinrich Schliemann dug into the numerous layers of Troy — and in the process inadvertently damaged precious remnants of later eras — he and his team were […]

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Exocomets around Beta Pictoris

October 24, 2014

Imaging planets around other stars is challenging enough because their light is overwhelmed by the proximity of the parent star. But what about comets? We may not be able to see them directly, but minute variations in light can mark their passage across the stellar disk. Nearly 500 comets have been detected around the star […]

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Starflight: Millennial Options

October 23, 2014

Over the years we’ve discussed many concepts for ships that could take us to the stars (they’re all in the archives), and none of them are without problems. Although Les Shepherd was analyzing antimatter possibilities by 1952 and solar sails were already coming into the mix, I’d argue that the first design that looked like […]

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The Cost of Interstellar Flight

October 22, 2014

Sten Odenwald, an astronomer at the National Institute of Aerospace, takes aim at interstellar flight in a recent essay for the Huffington Post. Dr. Odenwald’s critique makes many valid points by way of showing how difficult the interstellar challenge is. I am much in favor of articles that do this, because putting a payload past […]

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New Horizons: Potential KBO Targets Identified

October 21, 2014

The welcome news that the Hubble Space Telescope has found three potential Kuiper Belt targets for New Horizons means that our hopes for an extended mission may be fulfilled. Pluto/Charon is an exciting target, but how much better to use the spacecraft to visit a Kuiper Belt object as well, a member of that vast […]

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Mimas: An Intriguing Interior

October 20, 2014

I like what Radwan Tajeddine (Cornell University) has to say about recent work on Saturn’s moon Mimas. The lead author of a paper on the subject in Science, Tajeddine compares recent Cassini observations of the moon to a child shaking a wrapped gift, trying to figure out what the package conceals. ‘Shaking’ Mimas in a […]

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Woven Light: Age of Release

October 17, 2014

Librarian and writer Heath Rezabek (and since he’s birthing what looks to me to be a book, I should probably refer to him as a novelist as well) has been exploring the ways we might use archives to explore our civilization even as we ensure its survival against existential risk. Heath uses speculative fiction to […]

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