3.1

The APOD from the 19th shows sand dunes on Mars covered in frost. The image is striking because it shows something as mundane how frost sublimating on sand dunes can create a magnificent scene of natural beauty. One of the main problems that astronomers seem to face is that some people simply don't care about a "dead hunk of rock." But when an image like this is released, it shuts them up. At least for two or three weeks.