The online astronomy office hours from the UofA continue apace. Every week Prof. Chris Impey answers ex tempore a mix of questions from planetary science to the fate of the universe from a thirsty audience across the globe. A large Indian contingent stays up until the wee small hours of their morning to join in. Part of the fun is pausing the video and trying to figure out the answer from basic considerations before resuming. It is fun to be right but more instructive to be wrong. I’ve been moved to send in three questions over the past couple of sessions and all have been answered.
- When in relation to the Big Bang did dark matter originate?
- There is a surprising correlation between supermassive galactic black hole size and the population of old stars in a galaxy. Can telescopes now resolve individual stars in distant galaxies well enough to distinguish old from new to establish this connection?
- Observational results come from the successful. How do astronomers get precious telescope time?
Youtube Channel: Astronomy State of the Art
Silicon Valley has reshaped the earth, Hollywood has driven our perceptions of it, and not always for the better. Less well known is the outsized role California has played in understanding our universe. Mt. Wilson, Mt. Palomar, and their astronomers have had a Copernican impact on where we stand in the grand scheme of things. The word ‘vision’ gets bandied about a lot these days but George Ellery Hale had it in spades. Here’s how the two observatories that housed Hubble, Humason, Shapley, Zwicky, Baade, Rubin, and Schmidt came to be.
The third video from Corning’s Museum of Glass shows that the path to science is not always smooth and that learning from mistakes is the norm. The original 200 inch pyrex disk for the Palomar primary did not go according to plan and had to be recast. The second attempt succeeded and even so, it took ten years of painstaking grinding and polishing at Caltech before it was ready for use.
Youtube Channel: Palomar Observatory
Youtube Channel: Irish Astronomy
Youtube Channel: Corning Museum of Glass
We are nowhere near the end of this torture.
Youtube Channel: Johan Jacobsen
Let Friday showed that yes. Yes, it can.
Rest in peace, Justice Ginsburg. Emphasis on Justice.
I have always imagined that Paradise will be a kind of library
— J.L. Borges
No, I haven’t read any Borges but this is one of those quotes that is very popular with my ilk. But, libraries are indeed wonderful things and I remember hanging out a lot – and later volunteering – at the old Albany (California) Public Library on Solano Avenue in the late 1970s. Don’t look for it there now, it is a youth center affiliated with the YMCA. I spent as much time at the Doe and Bancroft as any science major at Cal could. The specialty books and journals were in Hildebrand Hall but the atmosphere in the general purpose stacks was unbeatable. The Internet has obliterated what little attention span I once had so sitting down and reading a physical book is next to impossible and yet the lure, the promise, and the perfume of endless shelves of books is still strong.
“Objectivity” is one of Brady Haran‘s strongest and most addicting channels. Most of the episodes are filmed at the Royal Society‘s Library in London and feature Keith Moore, the hypnotic and wildly popular head librarian who pulls from a bottomless collection of manuscripts, paintings, sculptures, and instruments from Newton to the present. The Brits were pieces of work for several hundred years but there can be no denying that they made a few positive contributions to somewhat offset their spherical bastardy.
Visiting the Society’s collections may just be sufficient to deal with the rigors of travel in whatever a post-COVID landscape may look like as well as London’s notoriously high prices.
Enjoy the long-requested Q&A with The Man which includes a very candid answer to a probing viewer question. Be sure to check out the rest of the channel – some selections below.
Youtube Channel: Objectivity
Is this thing still on?
I’ve posted previously of CinemaTyler’s excellent but breathless exploration of 2001: A Space Odyssey. ParallaxNick takes a more leisurely and historical look at the same film. It is less about the filmmaking process and more on its origins, development, context, and implications. Nick’s videos about astronomy are well worth the watch.
Youtube Channel: ParallaxNick
The slide into whatever lies beyond madness accelerates. Weeks of federal inaction during a medical emergency, instant promises of military aid when people protest murder.
It will get worse and it won’t get better.
Youtube Channel: FilmStruck
Yeah, me neither.
Vandalized COVID signs in Manhattan Beach.