Space Threat Quotes

Perhaps, in retrospect, there would be little motivation even for malevolent extraterrestrials to attack the Earth; perhaps, after a preliminary survey, they might decide it is more expedient just to be patient for a little while and wait for us to self-destruct.

I am not sure whether I should be afraid of a national security threat from another country or another solar system.

We have learned now that we cannot regard this planet as being fenced in and a secure abiding place for Man we can never anticipate the unseen good or evil that may come upon us suddenly out of space.

After once having made the mistake of watching television news, I had worried for a while about an asteroid hitting the earth and wiping out human civilization. The anchorwoman had said it was not merely possible but probable. At the end of the report, she smiled.

It is most gratifying," it said, "that your enthusiasm for our planet continues unabated, and so we would like to assure you that the guided missiles currently converging with your ship are part of a special service we extend to all of our most enthusiastic clients, and the fully armed nuclear warheads are of course merely a courtesy detail. We look forward to your custom in future lives ... thank you.

If we move toward the weaponisation of space, we can bid farewell to the planet. The chances of survival are very slight.

What if an asteroid were to strike planet Earth? What could we possibly do to prevent it? However many guys we have working on this problem, it can't possibly be enough.

thus, in a sense, we are all doomed. even if we stay away from black holes

If you get asteroids about a kilometer in size, those are large enough and carry enough energy into our system to disrupt transportation, communication, the food chains, and that can be a really bad day on Earth.

When you have an asteroid threatening Earth, it's uncertain where it's going to hit until the last minute; the decision to take action has to be coordinated by the international community.

Asteroids have hit the Earth millions of times. We can see them as shooting stars every night. When they get bigger, things get complicated. It is only a matter of time until a big one hits us. And since we can do something about it, we should.

The nice thing about asteroids is that once you've found them, and once you have a good solid orbit on them, you can predict a hundred years ahead of time whether there is a likelihood of an impact with Earth.