Neil deGrasse Tyson: Where Are the Aliens?

If there is alien life in the galaxy, where are they? Have they already visited Earth? In this video from Business Insider and StarTalk Radio, astrophysicist Neil deGrasse Tyson speculates on what might happen if aliens do visit Earth, and what they might think of us, our scientific achievements and our early adventures in space. Neil also discusses what Stephen Hawking’s fear of aliens really says about how we have treated less advanced civilizations in the past.

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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

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[MercuryAlphaInc]

I'm so glad I watched "Everything Wrong With Interstellar" and that it led me to subscribe to StarTalk Radio. I enjoy getting my mind blown by things like this!

Not a smart person here, but I do like listening to smart people.

[CobaltFlytrap]

How he said "Forget it!" was just hilarious.
We really need more people like Niel deGrasse Tyson to get much more of the younger generation interested in this stuff.

[Vicioussama]

I actually try to not step on the worm if I notice it. :P

[theblackrainbow]

I love it when Neil talks about Alien civilizations. I feel like he doesn't take an anthropocentric take on things and he comes up with very fascinating and valid points. 

[goddessvamplou]

Neil's just SLAYING everyone. It has me in tears. I love it.

[StarTalk]

*Where are the aliens? Have they already visited Earth?*

[caselorance]

I'm happy he mentioned what hawking feels on this. I agree with tyson on this, but I would like there to be more discourse on the matter, rather than simply presenting his thoughts.

[Shellsterxx]

Maybe aliens just think humans are d-bags. The most popular humans usually are.

[jf]

i swear i like this guy. very down to earth yet very explicit in his explanations.

[Showerofjyzz]

shoulda made this like 45 minutes long! i could sit here all day watching

[jamesjacobs]

This is one of my favorite videos. Great insight

[BlackEpyon]

The aliens land at ComiCon.... and nobody notices ;P

[redexoudos]

Thank you Mr. Tyson. I personally agree with the idea that any species that is obviously way more advanced would not make the journey here just to start a fight. I do also believe u are right about comic-con. Keep up the good work.

[antonyschoolofmusic]

Is there a possibility of any Life forms having DNA that can spin clockwise and counter clockwise too?

[Hathur]

Equally important though is the factor of time. Earth & humanity, in the scheme of time of the universe, have existed only for a miniscule amount of time.. a blink of an eye, if that. The universe and time are so vast that countless number of advanced civilizations across the universe could have lived, explored space, then died off for any number of reasons. Space & time are so vast that the probability that two space faring civilizations existing at the exact same moment in time, and encountering one another, are so unfathomably small that the probability humans will ever encounter advanced life during our species existence is likely laughably poor. Even if humans somehow survived another 1 million years, in the vastness of the universe & time, we still likely wouldnt encounter advanced space faring life. 

[kothar]

I could listen to Neil deGrasse Tyson all day.

[tomwalsh]

I would love to have like 30 minutes in Neils office just so i can route and play with all the things on his desk

[orlandotongue]

Many of them are all around us already in different dimensions; sweeping in and out of this one. 

[JoelBoon]

My fav part of this clip is Neil's half assed attempt to spin the globe on his finger like a basketball. Priceless.

[Weaksauceization]

I subbed and I'm addicted. IFLscience sent me here!