Category Archives: astronomy

Chandrayaan-2 Found by Citizen Scientist; Reminds Us of Pluto Discovery

What does Pluto — not the dog, but the non-Planet — have in common with the Vikram lunar lander launched by India? Both were found by making very tiny comparisons to photographs. You’d think landing something on the moon would be old hat by now, but it turns out only …read more

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Posted in astronomy, Current Events, Featured, ISRO, moon, news, Planet, Pluto, space, Vikram | Leave a comment

Simple Hand Tools Turn Brass and Steel Into An Amazing Astrolabe

There’s something enchanting about ancient tools and instruments. The idea that our forebears were able to fashion precision mechanisms with nothing but the simplest hand tools is fascinating. And watching someone recreate the feat, such as by building an astrolabe by hand, can be very appealing too.

The astrolabe is an ancient astronomical tool of incredible versatility, allowing the user to do everything from calculating when the sun will rise to predicting the positions of dozens of stars in the night sky. That it accomplishes all this with only a few moving parts makes it all the more fascinating. [Uri …read more

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Posted in ancient technology, astrolabe, astronomy, classic hacks, engraving, hand tools, instrument making, latitude, navigation, stars | Leave a comment