Quotes About Cosmos

if the universe is really completely self-contained, having no boundary or edge, it would have neither beginning nor end: it would simply be. What place, then, for a creator?

for the fluctuations in the background. However, within a few years we should know whether we can believe that we live in a universe that is completely self-contained and without beginning or end.

Now, if you believe that the universe is not arbitrary, but is governed by definite laws, you ultimately have to combine the partial theories into a complete unified theory that will describe everything in the universe. But there is a fundamental paradox in the search for such a complete unified theory.

The universe is a machine governed by principles or laws – laws that can be understood by the human mind.

The usual approach of science of constructing a mathematical model cannot answer the questions of why there should be a universe for the model to describe. Why does the universe go to all the bother of existing?

Why is there something rather than nothing? Why do we exist? Why this particular set of laws and not some other? This is the Ultimate Question of Life, the Universe and Everything. We shall attempt to answer it in this book. Unlike the answer given in The Hitchhiker's Guide to the Galaxy, ours won't be simply "42".

Anything or anyone who falls through the event horizon will soon reach the region of infinite density and the end of time.

A scientific law is not a scientific law if it only holds when some supernatural being decides to let things run and not intervene. In

We have seen in this chapter how, in less than half a century, man's view of the universe, formed over millennia, has been transformed.

Eventually, however, the star will run out of its hydrogen and other nuclear fuels. Paradoxically, the more fuel a star starts off with, the sooner it runs out. This is because the more massive the star is, the hotter it needs to be to balance its gravitational attraction.

The earth was initially very hot and without an atmosphere.

God does not play dice.

Anthropic principle: We see the universe the way it is because if it were different we would not be here to observe it. Antiparticle:

Now, if you believe that the universe is not arbitrary, but is governed by definite laws, you ultimately have to combine the partial theories into a complete unified theory that will describe everything in the universe.

Bodies such as stars or black holes cannot just appear out of nothing. But a whole universe can.

When you look at the vast size of the universe, and how insignificant and accidental human life is in it, that seems most implausible.

What place, then, for a creator?

the universe expanded by a factor of 1,000,000,000,000,000,000,000,000,000,000 in .00000000000000000000000000000000001 second. It was as if a coin 1 centimeter in diameter suddenly blew up to ten million times the width of the Milky Way.

In an infinite universe, every point can be regarded as the center, because every point has an infinite number of stars on each side of it.

Our modern picture of the universe dates back to only 1924, when the American astronomer Edwin Hubble demonstrated that ours was not the only galaxy. There were in fact many others, with vast tracts of empty space between them.

In space, no one can you scream; an in a black hole, no one can see you disappear

The Ionian idea that the universe is not human-centered was a milestone

One could define God as the embodiment of the laws of nature.

To understand the universe at the deepest level, we need to know not only how the universe behaves, but why. Why is there something rather than nothing? Why do we exist? Why this particular set of laws and not some other?" "This is the Ultimate Question of Life, the Universe, and Everything. We shall attempt to answer it in this book. Unlike the answer given in The Hitchhiker's Guide to the Galaxy, ours won't be simply "42.