Imagine this. You’re drinking your morning coffee. A small blob zooms at top speed through the kitchen, into the hall and out an open window. You only catch a quick fuzzy glimpse before it’s gone. What was that thing? What’s your first guess? A neighborhood cat? A squirrel? Maybe something more exotic like a raccoon…
A space mission to intercept an Oort cloud comet — or, if we’re lucky, an interstellar object like ‘Oumuamua.
Where would we be without the occasional asteroid crashing into the Earth?
Planets orbit stars. Moons orbit planets. But no moons have their own moons (let’s call them submoons). Why is that?
Short answer: Well sort of, but it’s more useful to think of it as being built from the same stuff as comets. Like an Uncle of the comets. Read on for an explanation. Earlier this week my wife mentioned a headline she saw. “Pluto is a giant comet? Whoa!” It was all over the place:…
One fine week in May, well, I needed some peace
I packed up my bags and I headed to Nice…
Mars is a weirdo. (Well, as far as planets go). Why is it so small (just 11% as massive as Earth)?
