Quote: “Always two there are, no more, no less.” – Star Wars: Episode I – The Phantom Menace  Well, stars do not always come in pairs (or triples, etc.). But binary stars – stellar pairs – are common. Estimates vary. Wiki uses an estimate “that approximately one third [33%] of the star systems in… Continue reading Stellar pairs – when the tango stops
So, it’s that time of year again: lots of recaps, lists of top this-and-that. Even milestones, discoveries, or breakthroughs in science. Here’s a YouTube video highlighting some progress in physics: • YouTube > Quanta Magazine > “The Year’s Biggest Breakthroughs in Physics” (Dec 23, 2020) YouTube description: This year, two teams of physicists made profound… Continue reading 2020 highlights
Yes, Virginia, there is a black hole in the center of our Milky Way . What might be expected if you asked, à la a Jay Leno “Jaywalking” segment, some random people this question: “Where’s the nearest black hole?” Well, tallying those that know what a black hole is  … those that know what… Continue reading Yes, Virginia, there is a black hole in the center of our Milky Way
[Communicating science series] Today my post celebrates another science communicator, Fraser Cain, and his YouTube channel by the same name. This week, I noticed his video “Two Supermassive Black Holes Orbiting Each Other. Stephen Hawking Was Right!” (May 11, 2020). Well-done visualization. His channel description says: Space and astronomy news from Fraser Cain, publisher of… Continue reading Black hole systems – communicating the cosmos
One of the main themes of this blog is “What’s changed in the last 50 years?” — as far as our understanding of physics and the cosmos. For this post, let’s consider the last 100 years or so. There have been major changes in our cosmic perspective. Rather than adding the content of this post… Continue reading Cosmic retrospective — gamma ray bursts
As teased earlier this month, today the Event Horizon Telescope (EHT) project announced and presented the first ever photographs of a black hole — “the last photon orbit.” Another epic story of big science and an international team. The interplay of models and simulations, data capture, and complex processing. And funding. Much news coverage. Here’s… Continue reading Photographing a black hole?
Regarding recent posts about black holes, here’s another YouTube video by The Science Asylum on the topic (published February 16, 2019): “Black Holes can SPIN?!?” I’ve previously highlighted The Science Asylum as a science communicator. This latest video is an interesting overview of black holes: non-spinning vs. spinning, the math vs. reality inside and outside… Continue reading Ergosphere – what?
In the last few months, I’ve been struck by how many articles have been published in the popular media and science news about black holes and the Big Bang. Mainstream physics and science communications (like phys.org, quantamagazine.org, etc) lately seem to be discussing more and more “mind blowing” geometries of the universe (or multiverse, eh).… Continue reading Cosmological fact and fiction
Space.com May 30, 2018, “World Science Festival Kicks Off in NYC with Black Holes, Aliens and More.” Science fans from around the globe will converge in New York City this week for the 11th annual World Science Festival, a celebration of scientific discoveries with more than 70 live events. The festival kicked off Tuesday (May… Continue reading World Science Festival — black holes, aliens, etc
Stephen Hawking died last week. Lots of tributes in the media about his scientific legacy and life. Sean Carroll posted an article on his blog on March 16: “Stephen Hawking’s Scientific Legacy.” It’s particularly interesting. As a career physicist and cosmologist, Carroll met and interacted with Hawking over the decades. Early in his career Carroll turned… Continue reading Celebrity and cultural phenomenon — Stephen Hawking