Stephen Hawking Quotes

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?

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.

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.

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

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

I'm baffled all the time. We don't know what's driving 96% of the universe. Everybody you know and love and heard of and think about and see in the night sky through a telescope: four percent of the universe.

I have always believed that astrophysics should be the extrapolation of laboratory physics, that we must begin from the present universe and work our way backward to progressively more remote and uncertain epochs.

Cosmology is a rapidly advancing field.

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'll have four different gravitational wave windows open within the next 20 years, and each of them will see something different. We'll be probing the birth of the universe with this. The so-called 'inflationary era' of the universe. We'll be probing the birth of the fundamental forces and how they came into being.

The realization that baryonic matter is only a trace component of the universe revealed our understanding of the cosmos as shockingly incomplete and was one of the milestones that ushered in the era of modern cosmology.

You go, dark energy! Go on, dark matter. They don't understand you, dark matter. They don't get you.

85 percent of the gravity of the universe has a point of origin about which we know nothing.

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

We know there must be new physics. For example, we cannot explain what dark matter is.

If you're puzzled by what dark energy is, you're in good company.

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.

It's everywhere, really. It's between the galaxies. It is in this room. We believe that everywhere that you have space, empty space, that you cannot avoid having some of this dark energy.

The success of ordinary cosmology speaks against the idea that the universe was created in a random fluctuation.

A full understanding of what happens in our everyday lives needs to take into account what happened at the Big Bang. And not only is that intrinsically interesting and just kind of cool to think about, but it's also a mystery that is not given much attention by working scientists; it's a little bit underappreciated.

'Eternal inflation,' as it's called - the endless generation of new universes - may be a hyper-cosmic imperative. It seems that it must happen.

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

General relativity is the cornerstone of cosmology and astrophysics. It has also provided the conceptual basis for string theory and other attempts to unify all the forces of nature in terms of geometrical structures.

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.