Click to embiggen The Age of Exploration included at least a little bit of schoolwork. Here are navigation students learning the ways of current and […]
Click to embiggen An image of the summer sky (in the Northern Hemisphere) by William Peck, F.R.A.S., from his book, The constellations and how to […]
Click to embiggen Roy Gjerston was an artist who designed stamps for the US Postal Service and spaceship concept art for General Dynamics. So this […]
Click to embiggen This is an image of an image of the heart – or at least an image of heart imaging. An echocardiogram done […]
Click to embiggen A house in space, with a big carport. Spaceport. You get the idea. From NASA’s Marshall Space Flight Center: This illustration Skylab […]
Single-celled algae, magnified 500 times. They float in ponds and stream banks. I found them in the Biodiversity Heritage Library, in the Rev. Francis Wolle’s […]
This airship is a kind of ancestor of the blimp or dirigible, designed by 19th-century American artist and inventor Rufus Porter, who’s perhaps best remembered […]
Click to embiggen A way NASA plans to get core samples from Mars, the Jovian moon Europa, and beyond – a drill designed to cut […]
Click to embiggen An Easter Sunday lunch is served: an early bird! This is the Chinese feathered dinosaur Sinocalliopteryx gigas, chomping the bird Confuciusornis – […]
Click to embiggen This is not the famous Event Horizon Telescope (EHT) black hole image that you’ve probably seen by now. It’s a visualization of […]
A horological device called a “verge escapement” (on the bottom) with a balance wheel (on the top) from a pocketwatch. An “escapement” is the thing […]
Click to embiggen Mm. Mighty mite. From a this book of mites. Luckily for us, these mites (the Oribatidae) aren’t parasitic. They live in dirt […]
Click to embiggen “Lays eggs on larva boring in wood.” Add just one comma and that comes across as harsh criticism, but it’s really meant […]
Click to embiggen An ancient Roman central heating system – hot water would be flooded through the basement, and the floors would warm up. “Hypocaust” […]
Here, an astronomical family is building a 36-inch refractor telescope known as the Great Lick Refractor in the 1880s. It’s named for James Lick, an […]
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