There is an asteroid on a collision course with the Earth.
有一颗小行星可能会与地球发生碰撞。
Asteroids, also known as " minor planets ", are numerous in the outer space.
小行星, 亦称为 “ 小型行星 ”, 在外太空中不计其数.
The largest asteroid is Ceres, which is about a quarter the size of the moon.
最大的小行星是谷神星,体积约为月球的1/4.
Most stars probably have their quota of planets, meteorids, comets, and asteroids.
多数恒星也许还拥有若干行星 、 流星 、 彗星和小行星.
The orbits of such faint asteroids are not yet known.
但是对于这样暗的小行星的轨道,迄今尚未弄清.
Asteroid lies between Mars and Jupiter.
小行星位于火星与木星之间.
By comparison the navy was a queer little planet whirling in an austere void.
相比之下,海军像一颗在严峻的太空中旋转的怪诞的小行星.
Asteroid has become commonplace to the readers of interstellar travel stories in science fiction magazines.
对于读过科幻杂志中星际旅行故事的读者来说,小行星已是平淡无味了.
Don Yeomans often thinks about what that might be.
唐·约曼斯常在想,会撞击地球的小行星会是哪一颗.
How do I understand the designations the Center sends me?
我如何理解小行星中心给我的确认编号信?
World popular hits Arcade Ball, Asteroids and Galaxy Invaders are coming back!
世界流行的点击拱廊球, 小行星和银河入侵者都回来了!
The Geminides originate from mysterious 3200 Phaethon , which is an asteroid.
双子座流星雨是由神秘的第3200号小行星“非以颂”产生的.
In addition, there are thousands of small bodies as asteroids and comets.
此外, 被发现的还有成千上万的小型天体像是小行星和彗星.
Perhaps, extinctions are caused by something outside, like comets and asteroids.
也许, 灭绝是由外来物体引起的, 比如彗星和小行星.
But he wanted to locate the impact site of the asteroid.
但是他想确定小行星的撞击地点.