Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us. ...

To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us. (Neil DeGrasse Tyson)

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Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.

Neil DeGrasse Tyson Quotes: To declare that Earth must be the only planet in the universe with life would be inexcusably big-headed of us.