3D Solar System3D太阳系
Tap a planet to learn about it. Drag to turn the view. Pinch or use + and − to zoom.点一点行星来认识它，拖一拖转动画面，双指捏合或点 + 和 − 来缩放。
Loading the universe…正在加载宇宙……
Something went wrong with the 3D view.3D画面出了点问题。
Your browser cannot show 3D right now. You can still read about every object below.你的浏览器暂时无法显示3D画面，但仍然可以阅读下面每个天体的介绍。
Each object is shown big so you can see it. Their real sizes are very different. Surfaces are computer-made illustrations, not photos.为了让你看清楚，每个天体都被放大了，它们真实的大小差别很大。表面是电脑画的示意图，不是照片。
Not to scale! Sizes and distances are squeezed so everything fits on one screen. In real life, the planets are much, much farther apart.不是真实比例！为了让所有天体都能放进一个屏幕，大小和距离都做了压缩。真实的行星之间要远得多得多。