Culture and Society

The Interstellar Imperative

December 5, 2014

What trajectory will our civilization follow as we move beyond our first tentative steps into space? Nick Nielsen returns to Centauri Dreams with thoughts on multi-generational projects and their roots in the fundamental worldview of their time. As the inspiring monuments of the European Middle Ages attest, a civilizational imperative can express itself through the […]

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Rosetta: Building Momentum for Deep Space?

November 24, 2014

Even though its arrival on the surface of comet 67P/Churyumov-Gerasimenko did not go as planned, the accomplishment of the Rosetta probe is immense. We have a probe on the surface that was able to collect 57 hours worth of data before going into hibernation, and a mother ship that will stay with the comet as […]

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Slingshot to the Stars

November 21, 2014

Back in the 1970s, Peter Glaser patented a solar power satellite that would supply energy from space to the Earth, one involving space platforms whose cost was one of many issues that put the brakes on the idea, although NASA did revisit the concept in the 1980’s and 90’s. But changing technologies may help us […]

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TVIW: From Wormholes to Orion

November 20, 2014

People keep asking what I think about Christopher Nolan’s new film ‘Interstellar.’ The answer is that I haven’t seen it yet, but plan to early next week. Some of the attendees of the Tennessee Valley Interstellar Workshop were planning to see the film on the event’s third day, but I couldn’t stick around long enough […]

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Building Large Structures in Space

November 19, 2014

One thing the Tennessee Valley Interstellar Workshop did not offer was a lot of spare time. Les Johnson told attendees at the beginning that we would be working straight through. Between presentations and workshop sessions, that was pretty much the case, with no break at all between an 8:00 start and lunch, and afternoon sessions […]

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TVIW: Caveats for Long-Duration Missions

November 18, 2014

When he opened the Tennessee Valley Interstellar Workshop in Oak Ridge last week, Les Johnson told the audience that sessions would begin and end on time. Punctuality is a trait that I assume works well in Johnson’s day job at Marshall Space Flight Center, and it certainly was appreciated in Oak Ridge, where the delays […]

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Going Interstellar at Oak Ridge

November 17, 2014

When I was last in Oak Ridge, TN for the Tennessee Valley Interstellar Workshop in 2011, I arrived late in the evening and the fog was so thick that, although I had a map, I decided against trying to find Robert Kennedy’s house, where the pre-conference reception was being held. This year the fog held […]

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Driggers on The Space Show

November 2, 2014

Aerospace engineer and science fiction novelist Gerald Driggers will be a guest on The Space Show, hosted by David Livingston, tomorrow (Monday) at 5 PM Eastern US time (2200 UTC). You can listen to the show here. Centauri Dreams readers know Gerald as a champion of space colonization efforts going back to the days of […]

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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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