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Site URL: follow.it/centauri-dreams-imagining-and-planning-interstellar-exploration
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Posts: 10
Followers: 1
Inflatable Technologies for Deep Space
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Published: June 11, 2025 09:04
One idea for deep space probes that resurfaces every few years is the inflatable sail. Weâve seen keen interest especially since Breakthrough Starshotâs emergence in 2016 in meter-class sails, perhaps as small as four meters to the side. But if we chooseâŚ
Odd Couple: Gas Giants and Red Dwarfs
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Published: June 6, 2025 12:15
The assumption that gas giant planets are unlikely around red dwarf stars is reasonable enough. A star perhaps 20 percent the mass of the Sun should have a smaller protoplanetary disk, meaning sufficient gas and dust to build a Jupiter-class world areâŚ
Expansion of the Universe: An End to the âHubble Tensionâ?
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Published: June 3, 2025 14:10
When one set of data fails to agree with another over the same phenomenon, things can get interesting. Itâs in such inconsistencies that interesting new discoveries are sometimes made, and when the inconsistency involves the expansion of the universe,âŚ
Megastructures: Adrift in the Temporal Sea
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Published: May 29, 2025 09:09
Here about the beach I wanderâd, nourishing a youth sublime With the fairy tales of science, and the long result of Time⌠âTennyson Temporal coincidence plays havoc with our ideas about other civilizations in the cosmos. If we want to detect them, theirâŚ
The Statistically Quantitative Information from Null Detections of Living Worlds: Lack of positive detections is not a fruitless search
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Published: May 23, 2025 12:04
Itâs no surprise, human nature being what it is, that our early detections of possible life on other worlds through âbiosignaturesâ are immediately controversial. We have to separate signs of biology from processes that may operate completely outside ofâŚ
Unusual Skies: Optical Pulses & Celestial Bubbles
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Published: May 20, 2025 13:31
Finding unusual things in the sky should no longer astound us. Itâs pretty much par for the course these days in astronomy, what with new instrumentation like JWST and the soon to be arriving Extremely Large Telescope family coming online. Recently weâveâŚ
Eddies, Flows and van Gogh: Probing the Interstellar Medium
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Published: May 16, 2025 13:05
Science fiction collectors may well look a the two images below and think theyâre both Richard Powersâ artwork, so prominent on the covers of science fiction titles in the mid-20th Century. Powers worked often for Ballantine in the 1950s and later, alwaysâŚ
HD 219134: Fine-Tuning Stellar Music
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Published: May 13, 2025 14:19
HD 219134, an orange K-class star in Cassiopeia, is relatively close to the Sun (21 light years) and already known to have at least five planets, two of them being rocky super-Earths that can be tracked transiting their host. We know how significant theâŚ
Writing a Social Insect Civilization
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Published: May 9, 2025 17:04
Communicating with extraterrestrials isnât going to be easy, as weâve learned in science fiction, all the way from John Campbellâs Who Goes There? To Ted Chiangâs Story of Your Life (and the movie Arrival). Indeed, just imagining the kinds of civilizationsâŚ
Is Planet Nine Alone in the Outer System?
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Published: May 6, 2025 15:08
It was Robert Browning who said âAh, but a manâs reach should exceed his grasp, or whatâs a heaven for?â A rousing thought, but we donât always know where we should reach. In terms of space exploration, a distant but feasible target is the solarâŚ