crater
July 17, 2020
July 17, 2020 A couple months ago I wrote a blog post about defrosting dunes in Jeans crater, some wild southern polar dunes on Mars. Well it’s been that time of year on Mars, so I’m going to show some […]
June 15, 2020
June 15, 2020 Utopia Planitia is an ancient plain in the northern lowlands of Mars, thought to be made of volcanic rocks that were buried, more than 3 billion years ago, by sediments carried by water coming down from the […]
June 8, 2020
June 8, 2020 No long descriptions or explanations today, just a pretty picture of a lee dune (the dark rippled finger extending down the left side of this image): The rounded gray hills at the top are part of the […]
March 25, 2020
March 25, 2020 It’s been an interesting few weeks. Like many folks, I’m trying to work from home while keeping my kids busy. I’m fortunate to have a job that allows me to work at home, so I can continue […]
October 18, 2018
Right now, the Fourth Landing Site Workshop for the Mars 2020 rover mission is happening. It’s the last one, and in a few hours the scientists attending the workshop will vote on which of four sites they think the rover […]
September 24, 2018
Being a geomorphologist and reading a landscape is a little bit like being one of the forensic scientists on CSI (or choose your own favorite investigative show). A Mars geomorphologist usually has to do this entirely by remote sensing. So […]
March 12, 2018
How about some basic physics? It’ll be easy, I promise. Just look at the pretty picture below (click on it to see it better): The big crater is ~400 m (1/4 mile) across. Wind blows sediment from the top to […]
January 30, 2018
A Piece of Mars: The dark splash pattern in this 0.9×0.9 km (0.56×0.56 mi) scene (click on it for a better view) is the site of an impact crater that appeared between images sometime between August 2006 and March 2010 […]
December 26, 2017
A Piece of Mars: To see this one well you’ll have to click on the image. At the lower right, a 240 m (787 ft) diameter crater formed when a bolide hit the surface, throwing out ejecta on the surrounding […]