The Cosmos is weirder that we think. It's so weird that four experts can
only sit around and laugh as they outdo each other in trading stories about amazing findings and discoveries.
If you take a herd of 50 million elephants and cram them into a thimble, that will weigh the same as a thimble worth of a neutron star.
Neil deGrasse Tyson
Astrophysicist, Director, Hayden
In recent years, new technologies have brought waves of astonishing new
discoveries inundating cosmologists: A Universe whose expansion is speeding
up not slowing down? Gravitational lenses revealing distant galaxies
formed near the beginning of time? Galactic jets shooting out thousands of
light years? Black holes with the mass of a billion Suns lurking at the
center of galaxies, swallowing entire stars in a single bite? Dark energy,
emerging from nothingness, thwarting gravity and controlling the destiny of the Universe?
Human beings, despite the limitations of a modest home planet and barely 500
years of serious science, have crafted an elegant timeline of the Cosmos --
trailing back 14 billion years with startling detail -- and now bounding
ahead trillions of years with breath-taking perspective. As Einstein once
said, "The eternal mystery about the world is its comprehensibility!"
Delve deeper into this episode’s content.
Neil deGrasse Tyson, Ph.D.
Astrophysicist, Director, Hayden Planetarium
Neil Tyson talks about gravity waves, which some day may help us see the Big Bang.
Alan Guth Ph.D.
Alan Guth discusses advances in his field.