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Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people.
I am a being of Heaven and Earth, of thunder and lightning, of rain and wind, of the galaxies.
There may be aliens in our Milky Way galaxy, and there are billions of other galaxies. The probability is almost certain that there is life somewhere in space.
There are at least as many galaxies in our observable universe as there are stars in our galaxy.
String theory has the potential to show that all of the wondrous happenings in the universe - from the frantic dance of subatomic quarks to the stately waltz of orbiting binary stars; from the primordial fireball of the big bang to the majestic swirl of heavenly galaxies - are reflections of one, grand physical principle, one master equation.
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.
Neil deGrasse Tyson
Philosophically, the universe has really never made things in ones. The Earth is special and everything else is different? No, we've got seven other planets. The sun? No, the sun is one of those dots in the night sky. The Milky Way? No, it's one of a hundred billion galaxies. And the universe - maybe it's countless other universes.
Neil deGrasse Tyson
The ultimate aim of all science to penetrate the unknown. Do you realize we know less about the earth we live on than about the stars and the galaxies of outer space? The greatest mystery is right here, right under our feet.
There could be shadow galaxies, shadow stars, and even shadow people.
Traditional science assumes, for the most part, that an objective observer independent reality exists; the universe, stars, galaxies, sun, moon and earth would still be there if no one was looking.
The stars look the same from night to night. Nebulae and galaxies are dully immutable, maintaining the same overall appearance for thousands or millions of years. Indeed, only the sun, moon and planets - together with the occasional comet, asteroid or meteor - seem dynamic.
The principal reason for the universe's poker face is that its constituents are far away. Stars careen through space, and galaxies spin at speeds thousands of times faster than a jet plane. But given their distance, you'd need the patience of Job to notice much change in their appearance or position.
It bears mentioning that the Milky Way is only one of 150 billion galaxies visible to our telescopes - and each of these will have its own complement of planets.
Nature hasn't gone anywhere. It is all around us, all the planets, galaxies and so on. We are nothing in comparison.
For example, if the big bang had been one-part-in-a billion more powerful, it would have rushed out too fast for the galaxies to form and for life to begin.
I have to believe there's some other life force out there. I don't know in what form. But we can't have all these galaxies and universes without something going on.
There are lots of ideas which extend the Copernican principle one step further. We went from the solar system to the galaxy to zillions of galaxies and now to realising even that isn't all there is.
What a lonely species we are, searching for signals of life from other galaxies, adopting companion animals, visiting parks and zoos to commune with other beasts. In the process, we discover our shared identity.
In the end, all that time I spent in the 'Star Wars' universe fostered galaxies of creativity and made me a better person here on Earth, because it taught me that everyone counts. That's why I can sincerely and with a straight face say: 'May the Force be with you.'
The farther we peer into space, the more we realize that the nature of the universe cannot be understood fully by inspecting spiral galaxies or watching distant supernovas. It lies deeper. It involves our very selves.
I always think of space-time as being the real substance of space, and the galaxies and the stars just like the foam on the ocean.
Don't you see what's at stake here? The ultimate aim of all science to penetrate the unknown. Do you realize we know less about the earth we live on than about the stars and the galaxies of outer space? The greatest mystery is right here, right under our feet.
I've read that a naked eye can see six thousand stars in the hundred billion galaxies, but I couldn't believe it, what with the sky white with starlight. I saw a million stars with one eye and two million with both.
William Least Heat-Moon
Our galaxy's pretty ordinary, garden-variety. So if we believe our galaxy has a super massive black hole, that tells us that most, if not all, galaxies host such a black hole at their centers.
Andrea M. Ghez
If you take a galaxy and try to make it bigger, it becomes a cluster of galaxies, not a galaxy. If you try to make it smaller than that, it seems to blow itself apart.
Jeremiah P. Ostriker
A. P. J. Abdul Kalam
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