Lately I’ve been lingering in Bortle 1 zones, rare dark places untroubled by human lights. On the scale, 1 is where your eyes discern the faintest satellites and the fuzzballs of nearby galaxies. When you wake hours before dawn, the atmosphere lacks the flashing planes, and sometimes satellites seem to have fallen asleep. The stars […]
The Cosmos
Even at a thousand words, this picture would be way undervalued. But there it was, waiting to be taken (the picture, that is, not the object). So I took, during a visit to Florence, and I wrote, in 2014, and I redux, here, because some images you just can’t get out of your head. The […]
The historian of science Owen Gingerich died on May 28. We’re re-posting this essay, which originally appeared on June 10, 2011, because it involves the author’s personal encounter with him. The references to dates (e.g., “A few months ago”) remain as in the original post. The 16-year-old student has an idea, but she doesn’t have […]
A version of this essay originally appeared June 15, 2012, as part of this site’s Father’s Day series. In the final paragraph I’ve updated one temporal reference (“two weeks ago yesterday” to “May 31, 2012”) and added one recent personal development. “My father,” I would say, “is older than the universe.” The line has always […]
One cold night a couple of weeks ago, my family and I bundled up to bike out to a park in one of Seattle’s northern suburbs. We have a routine for such trips after all these years. First we layer, and then we bedeck our bikes with lights: front lights, back lights, hub lights, even […]
Time again to reach into the “Ask Mr. Cosmology” mailbag and see what readers want to know about . . . The Wonders of the Universe! Q: Does the word “creation” imply a Creator? Mr. Cosmology: No, thank God. Q: What does Mr. Cosmology think of the theorists who argue for the anthropic principle? Mr. Cosmology: They’re […]
This essay originally ran in 2011. Back then, the Hubble Space Telescope was the exemplar of non-Earth astronomical observation. Its successor, the James Webb Space Telescope, launched in December 2021. This anecdote, however, might be timeless. In 1984, David Soderblom was a new hire at the Space Telescope Science Institute in Baltimore, and one day […]
Given the choice, I wouldn’t be a bear, though it’s tempting to skip this dark season and live off my fat. Far below the metabolic plane of sleep, my body would be as cold as death to the touch. Parts of the brain that dart about in REM sleep are turned off, brain functions reduced […]