March 25

On the 25th in 1655, Christiaan Huygens, a Dutch part-time astronomer, discovered Saturn’s largest moon, Titan. I really don’t see what the big deal is. Titan is huge; it has a diameter of over 5000 kilometers. It would be really impressive if he had found the moon Mimas, which has a diameter of about 400 kilometers.

His father was Constantijn Huygens, a poet for whom the prestigious Constantijn Huygens Award is named.