Neil deGrasse Tyson Quotes

We have a remarkably complete picture in many ways - and it could be that we're not accounting for something that's almost three-quarters of the entire universe.

In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move.

It now appears that the way the universe began can indeed be determined, using imaginary time.

There is nothing bigger or older than the universe.

One of the great challenges of modern cosmology is to discover what the geometry of the universe really is.

So important is this dark matter to our understanding of the size, shape, and ultimate fate of the universe that the search for it will very likely dominate astronomy for the next few decades.

We scientists have an obsession with unification, a grand synthesis. And dark matter is an irritating missing piece.

The Big Bang theory is the idea that if we go back early enough in the history of the universe - and we can do this, of course, by looking at starlight coming to us from billions of years ago - we will see a very hot and dense period where the universe was much smaller, denser, and hotter.

It was only about sixty years ago that the expansion of the universe was first observed.

If dark matter and dark energy are 95 percent of everything, shouldn't we all be asking questions about that? What does that look like?

Most gravity has no known origin. Is it some exotic particle? Nobody knows. Is dark energy responsible for expansion of the universe? Nobody knows.

Our galaxy, the Milky Way, is one of 50 or 100 billion other galaxies in the universe. And with every step, every window that modern astrophysics has opened to our mind, the person who wants to feel like they're the center of everything ends up shrinking.

People have contemplated the origin and evolution of the universe since before the time of Aristotle. Very recently, the era of speculation has given way to a time of science.

Up until the 1920s, everyone thought the universe was essentially static and unchanging in time.

The dark energy is not exactly zero, but the first 122 decimal points are zero. That's crazy. That is really one of the craziest things we've ever discovered.

Dark energy is incredibly strange, but actually it makes sense to me that it went unnoticed, because dark energy has no effect on daily life, or even inside our solar system.

According to the standard model billions of years ago some little quantum fluctuation, perhaps a slightly lower density of matter, maybe right where we're sitting right now, caused our galaxy to start collapsing around here.

Science sent the Hubble telescope out into space, so it could capture light and the absence thereof, from the very beginning of time. And the telescope really did that. So now we know that there was once absolutely nothing, such a perfect nothing that there wasn't even nothing or once.

They say the universe is expanding. That should help with the traffic.

We still don't know what about 96 per cent of the universe is made of. It is dark matter and dark energy, but we have no idea what it is.

Everything we know about the universe is studied by using telescopes or other instruments that look at visible light, infrared, ultraviolet or X-ray - different wavelengths of electromagnetic interactions. Only 4 percent of what's in the universe gives off electromagnetic radiation, so we don't have any handle on the rest.

The age of the universe is not just 'a guess', but rather it is a carefully measured number that is now known to a high degree of accuracy.

We already have a pretty good knowledge of the universe's mass-energy content, so if we can get a handle on its geometry, then we will be able to work out exactly what the fate of the universe will be.

Hubble has really opened our eyes to what the universe is made of, its structure, and has helped us learn how little we know about the universe.

I am deeply impressed with the way dark matter has explained cosmological observations.