Bearded Geology

I'm a huge Star Wars nerd. I'm going to say that right now and get it out of the way. I'll undoubtedly be subscribing to the Disney+ streaming service just to watch the new Star Wars live-action TV show, The Mandalorian , which just dropped a new trailer . In the trailer there is are a couple of shots of a new creature on an unspecified world from a galaxy far, far away: I will love him and squeeze him and call him George (© Lucasfilm/Disney) As soon as I saw this angry, furry unicorn pop up on the screen, I got a sudden, strong feeling as if I've seen this creature before. Then, the name Elasmotherium formed in my head. Elasmotherium is an extinct genus and cousin to the modern rhinoceroses that lived during the Pleistocene epoch (appx. 2.6 million years ago to appx. 39,000 years ago). One particular species, Elasmotherium sibericum , is now thought to have been one of the last of the genus that lived until about 39,000 years ago in Eurasia, when mode...

Various types of micrometeorites (credit: ©  Jon Larsen ) In 1970, a machine was rigged onto a high-altitude atmospheric balloon and sent 21.7 miles (35 km) into the sky over Texas. The machine, lovingly named the Vacuum Monster after a creature in The Beatles' Yellow Submarine  movie, collected microscopic particles as small as two micrometers (microns) in diameter. Some of which were determined to be extraterrestrial, marking this as the first time "space dust", or more precisely, micrometeorites, were collected at altitude. Micrometeorites are a niche area of study within astrogeology (the study of the geology of extraterrestrial bodies), but has recently been expanding as it is now more accessible for researchers. On a large scale, international space agencies have devoted funding for missions to collect material directly from asteroids and comets, such as the ongoing  Hayabusa 2  mission to the asteroid  Ryugu , which has very recently completed its ...

The MOOOOOOOOON!!! (image: Wikimedia ) 50 years ago today, Apollo 11 accomplished the bold feat of landing on the Moon and not only did they walk on the Moon, they brought back some of it with them on their return for study. Some bits of lunar rock found their way to becoming thin sections, which you can view here , and occasionally get loaned out to researchers outside of NASA. I was lucky enough to handle and view some of these thin sections in my undergrad Igneous and Metamorphic Petrology class, as well as a thin section of a Martian meteorite (the closest I'll ever get to being on Mars). The lunar rocks have been well-studied by geologists over the years and Mindat.org has curated a list of minerals found on the moon, almost all of which are also found on Earth. The Moon can, in a broad sense, been generalized into two types of igneous rocks: basalt and anorthosite. The bright, white-grey parts of the Moon are the anorthosite dominated areas. These are feldspar-rich ro...

On a rare occasion when I visit Facebook, I'll run across a post on my feed from someone who, for good humor or not, has shared an image, video, or link related to geoscience. Naturally, that makes me very happy and almost willing to comment on social media (I don't usually partake in many social media platforms and I try to keep my opinions on various matters personal). However, I have seen a few posts that are misleading or outright false that I will call out. One such is this image does raise an interesting question: No doubt that this image or variations of this image have been spread around on the Internet, and of course this is all in good humor. But, this is nevertheless poorly worded. Statement #1: "Those [countries] who use the Metric System" Firstly, "Metric System" doesn't need to be capitalized. Yeah, sure it's nitpicking, but I had to say it. Secondly, the US adopted the British system of measurements and altered them a bit to...

    Today, NASA announced a new mission , this one to one of Saturn's many moons, Titan. Titan beckons a visit from humanity so she can tell her tales to us. It is the 2nd largest moon in the solar system; slightly smaller than Jupiter's Ganymede, but still bigger than Mercury. With a thick atmosphere that is "four times denser than Earth's" and is much colder temperatures (appx. -290° F), some wondrous geologic and atmospheric processes are actively shaping the surface, such as raining freakin' methane (CH 4 ) and ethane (C 2 H 6 )!  Yeah, these molecules of carbon and hydrogen, combined with a nitrogen rich atmosphere (like Earth), are very important to the creation of life as we know it (on Earth anyways), and they just lay around as liquid  (not gas!) on the surface of Titan in rivers and lakes of hydrocarbons. While methane and ethane are produced by living things (e.g. aromatic farts), it can easily be produced through natural geologic processes just as...