Comment 1 for bug 925610

You see, that's how iPad (and other iOS devices) work: when translation is available, it is applied accordingly to device language. This is OS feature. You don't see it in most apps simply because they are rarely translated.

For sky objects and labels it is possible to disable automatic translation, and I will give it a thought. As a workaround, you can switch device language to English (or any other language).