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Posts: 10
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Explaining Cloud-9: A Celestial Object Like No Other
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Published: January 7, 2026 12:55
Some three years ago, the Five-Hundred Meter Aperture Spherical Telescope (FAST) in Guizhou, China discovered a gas agglomeration that was later dubbed Cloud-9. It’s a cute name, though unintentionally so, as this particular cloud is simply the ninth thus…
Astrobiology: What Our Planet Can Teach Us
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Published: January 1, 2026 14:25
Will 2026 be the year we detect life elsewhere in the universe? The odds seem against it, barring a spectacular find on Mars or an even more spectacular SETI detection that leaves no doubt of its nature. Otherwise, this new year will continue to see us…
Building a Library of Science Fiction Film Criticism
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Published: December 19, 2025 18:28
Back in the days when VCR tapes were how we watched movies at home, I took my youngest son over to the nearby Blockbuster to cruise for videos. He was a science fiction fan and tuned into both the Star Trek and Star Wars franchises, equally available at…
New Uses for the Eschaton
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Published: December 17, 2025 14:29
One way to examine problems with huge unknowns – SETI is a classic example – is through the construction of a so-called ‘toy model.’ I linger a moment on the term because I want to purge the notion that it infers a lightweight conclusion. A toy model…
A ‘Tatooine’ Planet Directly Imaged
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Published: December 11, 2025 19:34
I jump at the chance to see actual images – as opposed to light curves – of exoplanets. Thus recent news of a Tatooine-style planetary orbit around twin stars, and what is as far as I know the first actually imaged planet in this orbital configuration. I’m…
Catching Up with TRAPPIST-1
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Published: December 9, 2025 18:51
Let’s have a look at recent work on TRAPPIST-1. The system, tiny but rich in planets (seven transits!) continues to draw new work, and it’s easy to see why. Found in Aquarius some 40 light years from Earth, a star not much larger than Jupiter is close…
The Rest is Silence: Empirically Equivalent Hypotheses about the Universe
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Published: December 1, 2025 19:52
Because we so often talk about finding an Earth 2.0, I’m reminded that the discipline of astrobiology all too easily falls prey to an earthly assumption: Intelligent beings elsewhere must take forms compatible with our planet. Thus the recent post on SETI…
The Firefly and the Pulsar
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Published: November 20, 2025 15:27
We’ve now had humans in space for 25 continuous years, a feat that made the news last week and one that must have caused a few toasts to be made aboard the International Space Station. This is a marker of sorts, and we’ll have to see how long it will…
A Reversal of Cosmic Expansion?
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Published: November 12, 2025 18:33
We all relate to the awe that views of distant galaxies inspire. It’s first of all the sheer size of things that leaves us speechless, the vast numbers of stars involved, the fact that galaxies themselves exist in their hundreds of billions. But there is…
Building an Interstellar Philosophy
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Published: November 5, 2025 14:36
As the AI surge continues, it’s natural to speculate on the broader effects of machine intelligence on deep space missions. Will interstellar flight ever involve human crews? The question is reasonable given the difficulties in propulsion and, just as…