“Look within. Within is the fountain of good, and it will forever bubble up, if forever you dig.” –Marcus Aurelius Welcome back to yet another Messier Monday! Each week, we’re taking a look at one of the 110 fixed, deep-sky objects — not to be confused with comets — that made up Messier’s original catalogue. … Read moreMessier Monday: A Star Cluster on the Bubble, M52
“Mortal as I am, I know that I am born for a day. But when I follow at my pleasure the serried multitude of the stars in their circular course, my feet no longer touch the Earth.” –Ptolemy As regular readers here will know, earlier this month I went to Glacier National Park, meeting up … Read moreGuest Post: Shooting the Stars on a Budget
“It is always wise to look ahead, but difficult to look further than you can see.” –Winston Churchill We’ve come a long way in this Universe. Over the past 13.7 billion years, we’ve formed the light elements out of a sea of protons and neutrons, cooled and expanded to form neutral atoms for the first … Read moreWhere will we all be in 100 billion years?
Last year, I had just finished my Ph.D. studies, and had moved to Madison, WI to teach introductory physics at the University of Wisconsin. I was working on this paper, and when I submitted it, I got a phone call from New Scientist magazine’s space division. Fast-forward two weeks, and I find this article online, … Read moreDark Matter: Is it right in front of us?
I got a great question earlier today from my buddy Zrinka, and decided to figure out the answer for her, and also for myself. She asks: Ethan, is it possible to know, or better to say to imagine somehow how our galaxy looks from outside? What a simple-sounding question! After all, we know what the … Read moreQuestion: The Milky Way to an outsider…?