Quotes About Space

In the beginning, nearly fourteen billion years ago, all the space and all the matter and all the energy of the known universe was contained in a volume less than one-trillionth the size of the period that ends this sentence. Conditions

Space exploration may pull in the talent, but war pays the bills.

The one we call Earth formed in a kind of Goldilocks zone around the Sun, where oceans remain largely in liquid form.

These largely empty volumes of space—the far-rural regions of each galaxy—contain too little visible matter to explain the anomalously high orbital speeds of the tracers.

Asteroids are craggy chunks of rock. Comets are balls of dirt, ice, and frozen gases. And meteors are, quite simply, whatever falls through and burns up in Earth's atmosphere from outer space. Asteroids

There's a variation of the ever popular multiverse idea in which the multiple universes that comprise it are not separate universes entirely, but isolated, non-interacting pockets of space within one continuous fabric of space time - like multiple ships at sea, far enough away from one another so that their circular horizons do not intersect. As far as any one ship is concerned (without further data), it's the only ship on the ocean, yet they all share the same body of water.

We've come a long way since Herschel's experiments with rays that were "unfit for vision," empowering us to explore the universe for what it is, rather than for what it seems to be. Herschel would be proud. We achieved true cosmic vision only after seeing the unseeable: a dazzlingly rich collection of objects and phenomena across space and across time that we may now dream of in our philosophy.

If everything is so bright, there will be no place for light.

I believe that this nation should commit itself to achieving the goal, before the decade is out, of landing a man on the moon and returning him safely to the earth. No single space project in this period will be more impressive to mankind, or more important for the long-range exploration of space; and none will be so difficult or expensive to accomplish.

Listen up, because living off-planet might lie ahead.

In the beginning, nearly fourteen billion years ago, all the space and all the matter and all the energy of the known universe was contained in a volume less than one-trillionth the size of the period that ends this sentence.

Ordinary matter is what we are all made of. It has gravity and interacts with light. Dark matter is a mysterious substance that has gravity but does not interact with light in any known way. Dark energy is a mysterious pressure in the vacuum of space that acts in the

The National Air and Space Museum is unlike any other place on this planet. If you're hosting visitors from another country and they want to know what single museum best captures what it is to be American, this is the museum you take them to. Here they can see the 1903 Wright Flyer, the 1927 Spirit of St. Louis, the 1926 Goddard rocket, and the Apollo 11 command module—silent beacons of exploration, of a few people willing to risk their lives for the sake of discovery. Without

Since four coordinates are needed, we know that we live in a four-dimensional universe

nearly fourteen billion years ago, all the space and all the matter and all the energy of the known universe was contained in a volume less than one-trillionth the size of the period that ends this sentence. Conditions

By now, one second of time has passed. The universe has grown to a few light-years across,†† about the distance from the Sun to its closest neighboring stars.

where there is mass there is gravity. And where there is gravity there is curved space, according to Einstein's general theory of relativity. And where space is curved it can mimic the curvature of an ordinary glass lens and alter the pathways of light that pass through.

The closest anybody has come is to presume dark energy is a quantum effect—where the vacuum of space, instead of being empty, actually seethes with particles and their antimatter counterparts. They pop in and out of existence in pairs, and don't last long enough to be measured.

We are seeing these nearby stars, not as they are at the present moment, but as they were 4 years ago

One substantial hunk of junk led to the formation of the Moon. The unexpected scarcity of iron and other higher-mass elements in the Moon, derived from lunar samples returned by Apollo astronauts, indicates that the Moon most likely burst forth from Earth's iron-poor crust and mantle after a glancing collision with a wayward Mars-sized protoplanet.

When I pause and reflect on our expanding universe, with its galaxies hurtling away from one another, embedded within the ever-stretching, four-dimensional fabric of space and time, sometimes I forget that uncounted people walk this Earth without food or shelter, and that children are disproportionately represented among them.

Instead of the White House, why not take our visiting space alien to ComicCon. We'd have legitimate concerns that nobody would notice an actual alien camouflaged among those pretending to be one. The upside? Our alien visitor phones home and instead reports—"They're just like us!

The first trillionaire will be the person who exploits space resources on asteroids, on comets...

You can picture the universe as an enormous loaf of raisin bread rising in the oven