This marvelous video shows atmospheric gravity waves undulating over the surface of Stratus clouds near Colorado Springs, CO. Photo credit goes to Lars Leber who has a bunch of impressive Colorado cloud photography on his website.
Via the Cloud Appreciation Society
I can’t stop thinking about the eclipse.
I thought I pretty much knew what to expect from the 2017 solar eclipse. I understood the science. I had already witnessed a few partial/annular eclipses. I’ve been anticipating the event for a few years now and had read about the sensory changes I could expect to witness. I had a few good viewing locations scoped out with choices depending on the cloud coverage or crowds we might run into that day. My 3 1/2-year-old twins had plenty of food, water, sunscreen, eclipse glasses, and excitement. We were prepared for the event. But I soon learned that nothing could prepare me for the experience.
We had a perfect location on a ridge near Muddy Mountain Wyoming that provided 360 degree views. We were away from the crowds. And most importantly it was cloudless with 2 minutes and 18 seconds of anticipated totality.
We spent an hour watching the partial eclipse and eating a picnic lunch in the shade provided by some old, scraggly, Limber Pines. Eventually, the temperature began to drop slowly. Soon our surroundings dimmed and crickets began to chirp. I found myself caught off guard by the strangeness of my environment. The landscape appeared rosy and dimmed – as if I was wearing sunglasses. My stomach flipped with anticipation and anxiety caused by the surreality of my surroundings.
Quickly, much faster than I anticipated, darkness descended on us. The disorienting passage of time was head-spinning. I took my eclipse glasses off to see if I could see the umbra race toward us from across the valley below. But it happened too quickly. It was with a ridiculous suddenness that the moon’s shadow had shrouded us. I quickly turned around and looked up and saw the eclipsed sun glowing in the sky and my brain turned inside out.
My fingers fumbled around for my camera phone and I somehow managed to capture the image above. I tried to take a video of the “sunset” that surrounded us in every direction, but I only managed to catch these three seconds. I was overwhelmed.
The corona was much more bright and lustrous than I envisioned. It shone bright white and with a jaw dropping brilliance. We were all bewildered with its beauty and absolute strangeness. To look up into the sky and see a sparkling shine, unlike anything I have ever seen in my years of looking at the heavens. To share this with my wife and children.
And then it was gone. And now I can’t stop thinking about the eclipse.
The universe suddenly looks a lot more crowded.
Waaaaay back in 1995, the Hubble Deep Field images surprised the world by revealing how crammed the universe is with galaxies. At that time astronomers estimated there were about 200 billion galaxies in the universe. Recent estimates put that count closer to 2 trillion, at least 10 times as many galaxies as we thought. However, about 90% of the galaxies in the observable Universe are actually too faint and too far away to be seen or studied. Phil Plait explains:
Now, let me be clear. This doesn’t meant the Universe is ten times bigger than we thought, or there are ten times as many stars. I’ll explain — I mean, duh, it’s what I do — but to cut to the chase, what they found is that there are lots of teeny, faint galaxies very far away that have gone undetected. So instead of being in a smaller number of big galaxies, stars are divvied up into a bigger number of smaller ones.
And it doesn’t mean the Universe has 10 times more mass than we thought. The mass is the same, it’s just distributed differently than we thought. It’s like knowing there are 1 million people in a city, and finding out they live in 100,000 buildings when you thought they were only in 10,000. There are more buildings, but not more people
The team came to the conclusion that indeed there actually is such an abundance of galaxies that, in principle, every patch in the sky contains part of a galaxy. However, starlight from the galaxies is invisible to the human eye and most modern telescopes due to other known factors that reduce visible and ultraviolet light in the universe. Those factors are the reddening of light due to the expansion of space, the universe’s dynamic nature, and the absorption of light by intergalactic dust and gas. All combined, this keeps the night sky dark to our vision.
The sky is literally covered in galaxies! Mind boggling to be sure!
Videos of starling murmurations are numerous yet always enchanting. However, but this clip from Jan van IJken’s documentary short film The Art of Flying is exceptional because of the sound. From the video’s youtube page:
We know a lot of factual information about the starling—its size and voice, where it lives, how it breeds and migrates—but what remains a mystery is how it flies in murmurations, or flocks, without colliding. This short film by Jan van IJken was shot in the Netherlands, and it captures the birds gathering at dusk, just about to start their “performance.” Listen well and you’ll be able to hear how this beautiful phenomenon got its name.
I can’t decide if this gif from I created sneltopia video of a snail eating lettuce is cool or gross. Either way, it’s fascinating. To process food before it enters the esophagus, snails use a radula to crush it. This is a ribbon of flesh with very fine teeth which grinds the food like a very fine cheese grater.