Author Archives: Jeffrey A. Carver

David Stemple was the husband of writer Jane Yolen. He died today at age 68. He was a gentle and witty man who brightened any room. He was a computer scientist, but his delight was studying birds, and he had compiled some enormous database of bird sounds. I saw him only on occasion, when he was with Jane for a book signing or some other function, or at one of their gatherings at their farmhouse. I wish I’d had a chance to know him better.

Jane herself is a delightful person (besides being a fantastic writer), and they were perfectly suited to each other. I remember them visiting once, on their way to being proud “rock and roll parents,” watching their son Adam perform with his group Boiled in Lead at Johnny D’s in Somerville.

It is so sad. We are losing too many of our best.

A provocative article in the New Scientist online today suggests the possibility that maybe black holes really are just too cool to be true, and that what we should be looking for instead are “dark energy stars.” Furthermore, to quote from the article by Zeeya Merali, “Dark energy and dark matter, two of the greatest mysteries confronting physicists, may be two sides of the same coin.” Which would be a neat trick, since dark energy is apparently blowing the universe apart, while dark matter is helping to hold things together.

George Chapline, a physicist at Lawrence Livermore National Laboratory in California, and Nobel laureate Robert Laughlin of Stanford University, and their colleagues have suggested that “the objects that till now have been thought of as black holes could in fact be dead stars that form as a result of an obscure quantum phenomenon. These stars could explain both dark energy and dark matter.” The obscure quantum phenomenon is one that has been observed in superconducting crystals “as they go through something called ‘quantum critical phase transition.'” It all has to do with an apparent slow-down in the passage of time, due to some quantum trick that I certainly don’t understand.

Anyway, this gave the researchers an epiphany regarding black holes, and they set about analyzing what would happen if matter falling onto a collapsing star were passing through a layer of ” quantum critical phase transition.” And what they came up with was something that looks from the outside very much like a black hole, but without a singularity—and also without some of the problems that have frustrated black hole researchers for a while now.

I’ll stop trying to summarize, because it gets a little complicated. If this intrigues you, do read the article. It might ruin your day, if you really like singularities (as I do). But what the hey, I think we were all getting a little too comfortable in our cozy little feeling that we understood all about black holes. Don’t you?

Answer: they all showed up in my inbox today.

From NASA Science News, Jupiter is growing a new red spot!

If you like pictures of cool aircraft as much as I do, follow this link from Keith Truesdale to pictures from the Moscow Air Show.

From Live Science, via blog reader Marco, news of what sounds like a funny and thought-provoking movie, in which a filmmaker portrays evolutionary scientists as a “Flock of Dodos.”

And finally, an email inviting a response from me for a new blog called Meme Therapy. It looks promising, and it already has some comments by top SF writers. (I don’t have a response yet, but it’s on the burner.)

An article in the latest SFWA Bulletin dovetailed nicely with a home-experiment tip we picked up last summer from our friend, astronomer Larry Molnar. The tip was about cool science you can do with ordinary household grapes and your microwave. The article in the Bulletin mentioned this, and also discussed the brave science you can do with a strawberry Pop Tart and an electric toaster—preferably one you never intend to use again. You can read about both experiments, at http://www.pmichaud.com/grape/ and at http://www.pmichaud.com/toast/.

If you try these at home, just don’t blame me. (Actually, we tried the one with grapes, and it’s pretty cool.)