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Posts: 10
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Megastructures: Adrift in the Temporal Sea
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Published: May 29, 2025 09:09
Here about the beach I wanderād, nourishing a youth sublime With the fairy tales of science, and the long result of Timeā¦ āTennyson Temporal coincidence plays havoc with our ideas about other civilizations in the cosmos. If we want to detect them, theirā¦
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
Itās no surprise, human nature being what it is, that our early detections of possible life on other worlds through ābiosignaturesā are immediately controversial. We have to separate signs of biology from processes that may operate completely outside ofā¦
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. Itās 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 weāveā¦
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 theyāre both Richard Powersā 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, alwaysā¦
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 theā¦
Writing a Social Insect Civilization
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Published: May 9, 2025 17:04
Communicating with extraterrestrials isnāt going to be easy, as weāve learned in science fiction, all the way from John Campbellās Who Goes There? To Ted Chiangās Story of Your Life (and the movie Arrival). Indeed, just imagining the kinds of civilizationsā¦
Is Planet Nine Alone in the Outer System?
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Published: May 6, 2025 15:08
It was Robert Browning who said āAh, but a manās reach should exceed his grasp, or whatās a heaven for?ā A rousing thought, but we donāt always know where we should reach. In terms of space exploration, a distant but feasible target is the solarā¦
New Horizons: Still More from Systemās Edge
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Published: May 2, 2025 13:34
Even as Iāve been writing about the need to map out regions just outside the Solar System, Iāve learned of a new study that finds (admittedly scant) evidence for a Planet 9 candidate. I wonāt get into that one today but save it for the next post, as weā¦
Charting the Interstellar Medium
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Published: April 29, 2025 13:43
We donāt talk about the interstellar medium as much as we ought to. After all, if a central goal of our spacefaring is to probe ever further into the cosmos, weāre going to need to understand a lot more about what weāre flying through. The heliosphere isā¦
Magnetic Collapse: A Spur to Evolution?
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Published: April 25, 2025 12:57
The sublime, almost fearful nature of deep time sometimes awes me even more than the kind of distances we routinely discuss in these pages. Yes, the prospect of a 13.8 billion year old cosmos strung with stars and galaxies astonishes. But so too do theā¦