Ask Ethan #8: The Comet of the Century?

“I have just gone over my comet computations again, and it is humiliating to perceive how very little more I know than I did seven years ago when I first did this kind of work.” –Maria Mitchell Well, it’s getting close to the end of October, the Moon is waning towards its new phase, and … Read moreAsk Ethan #8: The Comet of the Century?

Ask Ethan #2: Meet the Oort Cloud

“The great oak of Astronomy has been felled, and we are lost without its shadow.” –Subrahmanyan Chandrasekhar, on the passing of Jan Oort In our new semi-regular series, readers from all over the world (and in low-Earth orbit, too, because why not!) are invited to send in their questions and suggestions for a chance to … Read moreAsk Ethan #2: Meet the Oort Cloud

Weekend Diversion: The Best Falling Stars of the Year

“Stuff that’s hidden and murky and ambiguous is scary because you don’t know what it does.” –Jerry Garcia Earlier this month, one of my favorite musical artist of all-time would have turned seventy. This weekend, I’m off at a fantastic music festival where they’re celebrating the life of Jerry Garcia, and in addition to being the … Read moreWeekend Diversion: The Best Falling Stars of the Year