Notes from a panel at Capricon 44, Chicago, Feb. 2, 2024. Any mistakes are mine. The panelists are not responsible for any errors here.
Bill Higgins, Henry Spencer
The OSIRIS-REx asteroid sampler has returned with a bounty of asteroid dust. Our panelists discuss what the findings have been so far, what is still to come, and what it all means.
Back in 2020 there was a report that Phosphine had been found in the atmosphere of Venus. Since Phosphine can be a sign of life that caused some excitement. I posted about this three times:
The last of these was in reference to Re-analysis of the 267-GHz ALMA observations of Venus: No statistically significant detection of phosphine? At the time that seemed like the end of the story.
However, there have been a lot more observations since then and some re-re-analysis of the earlier work, leading to Phosphine Confirmed Deep Within Venus’ Atmosphere, A Possible Sign Of Life. I am looking forward to seeing the technical details.
Why don’t moon photos show stars?. Specifically, why can’t we see the stars in the photographs of the Apollo Astronauts on the moon? As the article clearly explains, all of the pictures were taken during lunar daylight, during which the lunar surface is well illuminated by the sun. This completely washes out the light from the stars. If you made a long enough exposure to catch the stars, the lunar surface, the astronauts and their gear, and the lunar lander would be grossly overexposed. This would defeat the purpose of documenting human activity on the moon.
In fact, this issue was anticipated by Arthur C. Clarke in his classic science fiction novel A Fall of Moondust, first published in 1961, eight years before the first Apollo expedition landed on the moon. Continue reading
On Thursday, Sept. 1, Mia McDavid and I drove to Chicago for Chicon 8: The 80th World Science Fiction Convention at the Hyatt Regency Chicago . This was our 5th Chicon. Previously we had attended:
Despite some glitches, we really enjoyed the Con, and visiting downtown Chicago again.
As I wrote previously , Mia (my wife) and I spent last weekend at Capricon, a Chicagoland science fiction convention. We went to most of the Capricons in the ’80’s and ’90’s, but in our first years in Minnesota the pressures of parenthood prevented us from going. Those have eased somewhat and we have been to most of the Capricons (and Windycons) since 2009. While most Capricons have been in the Chicago suburbs, this year the convention was downtown, at the Sheraton Grand Hotel.
I found How Washington Got Hooked on Flying Saucers to be fascinating if somewhat depressing. “There is nothing new under the sun.”
This is a subject I have been watching from a safe distance for well over half a century, when I first read Martin Gardner’s Fads and Fallacies in the Name of Science (Few books have influenced me more than this one).
I met J. Allen Hynek in my last year of high school, 1967-68, when I was a student in the Astro-Science Workshop (Still around although in a different format) at Chicago’s Adler Planetarium. This program was organized and run by Hynek. Hynek was a pleasant and interesting speaker, and a good teacher, but he never spoke to us kids about UFOs.
Continue readingIt’s confirmed. There is water on the Moon. OK, what’s the big deal? Water is very common in the cosmos and has been seen on the moon before. The difference is that previously it had been been only in craters near the lunar south pole, perpetually in darkness. Now, as the updated NASA announcement said, NASA’s SOFIA Discovers Water on Sunlit Surface of Moon, which will be much more accessible to future explorers.
How significant this is remains to be seen, but it has provided Katie Mack with some inspiration.
Last month I posted about a Possible Sign of Life on Venus, which reported on Phosphine gas in the cloud decks of Venus. Earlier this month I mentioned More about phosphine on Venus. The story is not over yet.
A Question of Phosphine links to Re-analysis of the 267-GHz ALMA observations of Venus: No statistically significant detection of phosphine. This team re-analyzed the same data used in the first Phosphine gas paper, but came to the opposite conclusion. So it comes down to a very complicated question of statistical analysis.Professor Coles also linked to A stringent upper limit of the PH3 abundance at the cloud top of Venus by another team which included Jane Greaves, first author of Phosphine gas in the cloud decks of Venus.
From Hilbert Space to Dilbert Space, and beyond 