Fossil fuel Quote by Neil deGrasse Tyson

“So, whether the aliens explore with chemistry or with radio waves, they might come to the same conclusion: a planet where there’s advanced technology…

— Neil deGrasse Tyson

Some molecules - ammonia, carbon dioxide, water - show up everywhere in the universe, whether life is present or not. But others pop up…

— Neil deGrasse Tyson

I wonder if, in fact, we have been observed by aliens and upon close examination of human conduct and human behavior they have concluded…

— Neil deGrasse Tyson

Perhaps we've never been visited by aliens because they have looked upon Earth and decided there's no sign of intelligent life.

— Neil deGrasse Tyson

If an alien visited Earth, they would take some note of humans, but probably spend most of their time trying to understand the dominant…

— Nathan Wolfe

“All we know for sure is that if some astronomer turned a telescope to a far-off star cluster tonight and found incontrovertible evidence of…

— Sam Kean

For all we know, the aliens have already done this and unwittingly concluded that there was no intelligent life on Earth. They would now…

— Neil deGrasse Tyson

Discovering traces of life on Mars would be of tremendous scientific significance: The first time that any signs of extraterrestrial life had ever been…

— Nick Bostrom

I hope that someday we will find evidence that there is intelligent life among humans on this planet.

— Sylvia Earle

Perhaps, as some wit remarked, the best proof that there is Intelligent Life in Outer Space is the fact it hasn't come here. Well,…

— Arthur C. Clarke

Discussing the possibilities of extraterrestrial life: I would love it even if they were short, sullen, grumpy and sexually obsessed. But there just isn't…

— Carl Sagan

Intelligent life can't be all that common because it's really rare on Earth and especially since we define ourselves to be intelligent. But in…

— Neil deGrasse Tyson