Desktop Project Part 16: A dinky galaxy with a big gas problem

[This is another in a series of posts I'm doing to help me clear off the zillions of cool astronomy pictures I have sitting on my computer desktop. I've been posting one of these every day and will continue until my desktop is cleared!] One important aspect of science is its ability to question its own tenets. Some people think that's a weakness, but it's a strength! A stiff tree breaks in the wind, but a flexible one survives. There are, of course, a lot of basic things we do know pretty well. Evolution is real, the Universe is expanding and billions of years old, and so on. As we observe nature more, we learn more, and we can add to these ideas, fill in the details. Sometimes, of course, we learn something that means our models may be wrong, or need to be modified. Again, this is a strength ...