Category Archives: Planet

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

Unicycle Given a Hand Crafted Gear Box

Being able to coast on a bicycle is a feature that is often taken for granted. The use of a freewheel was an improvement made early in the bicycle’s history, for obvious reasons. This also unlocked the ability to build bikes with multiple gears, allowing higher speeds to be easily reached. On a unicycle, however, there’s no chain and the pedals are permanently fixed to the wheel’s axle, meaning that there is (usually) no freewheel and no gearing. [johnybondo] wanted to get some more speed out of his unicycle, though, and realized he could do this with his own homemade …read more

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Posted in axle, bicycle, fixed, gear, gearing, hub, Planet, ratio, transportation hacks, unicycle | Leave a comment