So I look up the distance — - the mean distance to these various planets — and you see that here in millions of kilometers.

我帮你们查阅了一下-，各大行星到太阳的平均距离-，单位是百万千米。

youdao

The most fascinating thing about your travels through the galaxy hasn't been the various planets you have visited; instead it is simply the view through the window of your spaceship.

在银河系航行当中最激动人心的地方不是你到访过的行星，而是那透过飞船舷窗中所看到的景色。

youdao

Massive projectiles striking much larger bodies create various kinds of craters, including multi-ring basins—the largest geologic features observed on planets and moons.

巨大的抛射物撞击更大的天体，创造了各种各样的陨石坑，包括多环盆地——这是在行星和卫星上观察到的最大的地质特征。

youdao

That plethora allows astronomers to start drawing conclusions about how common various sorts of planets are.

ECONOMIST: Another Earth?

Since 1994, researchers have confirmed the existence of more than 700 planets circling various stars, with more than 2, 000 additional candidates under study by astronomers around the world.

WSJ: Galaxy Hosts 100 Billion Planets, in New Estimate

Since 1994, researchers have confirmed the existence of more than 700 planets around various stars, with more than 2, 000 additional candidates currently under study by astronomers around the world.

WSJ: Galaxy Hosts 100 Billion Planets, in New Estimate