Quotes About Space

the light that we see from distant galaxies left them millions of years ago, and in the case of the most distant object that we have seen, the light left some eight thousand million years ago. Thus, when we look at the universe, we are seeing it as it was in the past.

DüÅŸük h?z? ve zay?f kuvveti ilgilendiren durumlarda zaman? ve uzay? ayr? ayr? ele alabiliriz. Oysa, genelde zaman ve uzay birbirine geçmiÅŸtir ve bunlar?n geniÅŸlemesi veya s?k??mas? belli oranda birbirine kar??may? içerir.

If you fall towards a black hole feet first, gravity will pull harder on your feet than your head, because they are nearer the black hole. The result is that you will be stretched out lengthwise, and squashed in sideways.

The great mystery at the heart of the Big Bang is to explain how an entire, fantastically enormous universe of space and energy can materialise out of nothing. The secret lies in one of the strangest facts about our cosmos. The laws of physics demand the existence of something called "negative energy.

Stephen Hawking

unirse. Necesitamos reavivar la emoción de los primeros días del viaje espacial en los años sesenta. La tecnología está casi a nuestro alcance. Es hora de explorar otros sistemas solares; puede ser lo único que nos salve de nosotros mismos. Estoy convencido de que los humanos necesitamos dejar la Tierra para evitar correr el riesgo de ser aniquilados.

Na teoria da relatividade, não existe tempo absoluto único; em vez disso, cada indivíduo tem sua própria medida de tempo, que depende de onde ele se encontra e de como está se movendo.

Our only chance of long-term survival is not to remain inward-looking on planet Earth, but to spread out into space.

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 is a black hole with a mass of about four million times that of the Sun at the centre of our Milky Way galaxy.

the universe is not infinite in space, but neither does space have any boundary.

A black hole is a region where gravity is so strong that light cannot escape.

Newton sangat khawatir dengan tiadanya posisi mutlak atau yang disebut ruang mutlak (absolute space), karena tidak cocok dengan gagasannya mengenai Tuhan yang mutlak. Dia malah menolak menerima ketiadaan ruang mutlak, walau hukumnya sendiri menyatakan demikian.

black hole has a boundary called the event horizon. It is where gravity is just strong enough to drag light back and prevent it from escaping.

Namun teori relativitas memaksa kita mengubah secara mendasar gagasan kita mengenai ruang dan waktu. Kita harus menerima bahwa waktu tidak sepenuhnya terpisah dari ruang, tapi malah berpadu dengan ruang untuk membentuk objek bernama ruang-waktu (space-time).

Dalam teori relativitas tidak ada waktu mutlak yang unik; tiap individu punya pengukuran waktu sendiri yang bergantung kepada tempat dan cara kerjanya.

Teori relativitas umum Einstein menyiratkan bahwa alam semesta harus punya permulaan dan, mungkin akhir.

Pada waktu itu, kecuali kita sudah ke luar Tata Surya, umat manusia akan telah lama punah, musnah bersama-sama Matahari kita!

What came before the Big Bang? According to the no-boundary proposal, asking what came before the Big Bang is meaningless—like asking what is south of the South Pole—because there is no notion of time available to refer to. The concept of time only exists within our universe.

In 2016 I joined with the entrepreneur Yuri Milner to launch Breakthrough Starshot, a long-term research and development programme aimed at making interstellar travel a reality. If we succeed, we will send a probe to Alpha Centauri within the lifetime of people alive today.

This means that at earlier times objects would have been closer together. In fact, it seemed that there was a time, about ten or twenty thousand million years ago, when they were all at exactly the same place and when, therefore, the density of the universe was infinite.

In the theory of relativity, if one can travel faster than light, one can also travel back in time, and this would lead to problems with people going back and changing the past. One would also expect to have already seen large numbers of tourists from the future, curious to look at our quaint, old-fashioned ways.

En cierto modo, la especie humana necesita mejorar sus cualidades mentales y físicas para tratar con el mundo cada vez más complejo que lo rodea y afrontar nuevos desafíos como los viajes espaciales. Y también necesita aumentar su complejidad si los sistemas biológicos deben mantenerse por delante de los sistemas electrónicos. Por el momento, los ordenadores nos aventajan en velocidad, pero no muestran signos de inteligencia.

Extenderse al espacio tendrá un efecto aún mayor. Cambiará completamente el futuro de la especie humana, y tal vez determinará que tengamos o no algún futuro. No resolverá ninguno de nuestros problemas inmediatos en el planeta Tierra, pero nos proporcionará una nueva perspectiva sobre ellos y hará que miremos hacia fuera en lugar de hacia dentro. Con suerte, nos unirá para enfrentar el desafío común.