Croswell discusses recent discoveries of hypervelocity stars, why planets are rare in the outermost reaches of our galaxy and the black hole hiding inside the galactic core. The Astroengine article “Life is Grim on the Galactic Rim” gets a mention as Croswell describes metal-poor stars and why life might be unlikely in those systems.
From “Star Struck”:
“It’s hard to be modest when you live in the Milky Way. Our galaxy is far larger, brighter, and more massive than most other galaxies. From end to end, the Milky Way’s starry disk, observable with the naked eye and through optical telescopes, spans 120,000 light-years. Encircling it is another disk, composed mostly of hydrogen gas, detectable by radio telescopes. And engulfing all that our telescopes can see is an enormous halo of dark matter that they can’t. While it emits no light, this dark matter far outweighs the Milky Way’s hundreds of billions of stars, giving the galaxy a total mass one to two trillion times that of the sun. Indeed, our galaxy is so huge that dozens of lesser galaxies scamper about it, like moons orbiting a giant planet.”
A couple of months ago I was contacted by National Geographic magazine notifying me that one of their writers had quoted me in an article for their December issue. Pretty cool, I thought. But then I forgot all about it.
The following morning, I received a complementary copy of the December edition so I could see Astroengine in print for the first time.
National Geographic’s special feature takes a fascinating tour of the Milky Way and when discussing metal-poor stars in the outermost reaches of our galaxy, the article quotes the title of the Astroengine post “Life is Grim on the Galactic Rim.” Obviously they like my rhyming skills.
Ever wonder why some of the Apollo lunar landing shots are a little out of focus? Ever wonder why chunks of photographs from the Moon have been cut out, leaving a a little squirrel-like shape behind?
Wonder no more, even the Moon has a colony of ground squirrels (plus mini-space helmets, of course), ready to pop out of hiding when they feel the vibration of lunar lander thrusters, astronaut footsteps, and the whine of focusing cameras. This is one Moon conspiracy solved, once and for all!
Don’t worry, I haven’t lost it quite yet, I’ve just been playing with Photoshop. This is in response to the wonderful National Geographic photograph of a curious ground squirrel that managed to pose for the perfect holiday snap in Canada’s Banff National Park. Now the image is going viral, with little squirrel cut-outs appearing in a huge range of photos and videos.