Quotes About Space

We must accept that time is not completely separate from and independent of space, but is combined with it to form an object called space-time.

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 microwave background indicated that the universe had had a hot, dense stage in the past.

What most of these authors don't seem to have realized is that if you can travel faster than light, the theory of relativity implies you can also travel back in time, as the following limerick says: There was a young lady of Wight Who travelled much faster than light. She departed one day, In a relative way, And arrived on the previous night.

Since we know the universe itself was once very small—perhaps smaller than a proton—this means something quite remarkable. It means the universe itself, in all its mind-boggling vastness and complexity, could simply have popped into existence without violating the known laws of nature. From that moment on, vast amounts of energy were released as space itself expanded—a place to store all the negative energy needed to balance the books.

In space, no one can hear you scream; and in a black hole, no one can see you disappear.

We also have some evidence that there is a much larger black hole, with a mass of about a hundred thousand times that of the sun, at the center of our galaxy.

to explain how the early universe

according to the laws of nature concerning gravity and motion – laws that are among the oldest in science – space itself is a vast store of negative energy. Enough to ensure that everything adds up to zero.

time and space are intertwined. It is something like adding a fourth direction of future/past to the usual left/right, forward/backward, and up/down. Physicists call this marriage of space and time "space-time," and because space-time includes a fourth direction, they call it the fourth dimension.

The nonexistence of absolute rest therefore meant that one could not give an event an absolute position in space, as Aristotle had believed.

If there are beings alive on Alpha Centauri today, they remain blissfully ignorant of the rise of Donald Trump. It

This is known as the twins paradox, but it is a paradox only if one has the idea of absolute time at the back of one's mind. In the theory of relativity there is no unique absolute time, but instead each individual has his own personal measure of time that depends on where he is and how he is moving.

time is not completely separate from and independent of space, but is combined with it to form an object called space-time.

In conclusion, rapid space travel and travel back in time can't be ruled out according to our present understanding. They would cause great logical problems, so let's hope there's a Chronology Protection Law to prevent people going back and killing their parents.

The lack of an absolute standard of rest meant that one could not determine whether two events that took place at different times occurred in the same position in space. For example, suppose our Ping-Pong ball on the train bounces straight up and down, hitting the table twice on the same spot one second apart. To someone on the track, the two bounces would seem to take place about thirteen meters apart, because the tram would have traveled that far down the track between the bounces.

Eine große Offenbarung des Weltraumzeitalters bestand darin, dass es der Menschheit die Sicht auf sich selbst ermöglichte. Betrachten wir die Erde vom All aus, sehen wir uns selbst als Ganzes. Wir nehmen die Einheit wahr und nicht das Trennende. Ein einfaches Bild mit einer unwiderlegbaren Botschaft: ein Planet, eine Menschheit.

Segundo algumas teorias, o universo que vivenciamos é apenas uma superfície quadridimensional em um espaço com dez ou onze dimensões. O filme Interestelar dá uma ideia de como isso funcionaria. Nós não veríamos essas dimensões extras porque a luz não se propagaria por elas, mas apenas pelas quatro dimensões do nosso universo.

One way or another, I regard it as almost inevitable that either a nuclear confrontation or environmental catastrophe will cripple the Earth at some point in the next 1,000 years which, as geological time goes, is the mere blink of an eye. By then I hope and believe that our ingenious race will have found a way to slip the surly bonds of Earth and will therefore survive the disaster.

from ourselves. I am convinced that humans need to leave Earth. If we stay, we risk being annihilated.

It is said that fact is sometimes stranger than fiction, and nowhere is that more true than in the case of black holes. Black holes are stranger than anything dreamed up by science-fiction writers, but they are firmly matters of science fact.

Estoy convencido de que los humanos necesitamos dejar la Tierra para evitar correr el riesgo de ser aniquilados.

The twentieth century saw man's view of the universe transformed: we realized the insignificance of our planet in the vastness of the universe, and we discovered that time and space we curved and inseparable , that the universe was expanding, and that it had a beginning in time.