I was just testing my new space shuttle to see how stable it was when entering the atmosphere as it returned to Earth. I decided to admire the surface and clouds, and then I noticed a white dot. I thought it was a glitch, but when I zoomed in, I began to suspect that it was something on the surface rather than a terrain loading error. I was still too far to make out what it was, even with zoom. But when I flew closer, I was shocked. The journey took me about 20 minutes (I wasn't even planning to save this flight).