“Life can exist on other planets, in other solar systems, in other galaxies and universes.”

Source: Flying saucers, the process of matter and energy, science, the revolutionary and working-class struggle and the socialist future of mankind (26 June 1968)

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J. Posadas5

Argentine Trotskyist (1912-1981) 1912–1981

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“There might be very primitive life in our solar system — single-cell animals, that sort of thing. We may know the answer to that in five or ten years. There is very likely to be life in other solar systems, in planets around other stars. But we won't know about that for a long time.”

Sally Ride (1951–2012) American physicist and astronaut

Scholastic interview (1998)

“I don't see how you can be saying this. Look. You want to take…you want your god to take responsibility for the huge number of collapsing stars and imploding galaxies and destroyed universes and failed solar systems that have left us in this tiny corner on the one planet in this petty solar system that can support life some of the time on some of its surface. And you want a creator who filled this earth with species, since life began 99% of which are now extinct already…and this is some design, isn't it?”

Christopher Hitchens (1949–2011) British American author and journalist

2000s, 2007
Source: Hannity's America, May 13, 2007 interview https://www.youtube.com/watch?v=dWoHh4_rVdg http://transcripts.wikia.com/wiki/Sean_Hannity_Christopher_Hitchens_Hannity%27s_America_May13%2C_2007?venotify=created

“Our own galaxy system is only one of a great many, and observations made from any of the others would show exactly the same thing: all systems are receding, not from any particular centre, but from each other: the whole system of galaxies is expanding.”

Willem de Sitter (1872–1934) Dutch cosmologist

Kosmos (1932)

“Most certainly, some planets are not inhabited, but others are, and among these there must exist life under all conditions and phases of development.”

Nikola Tesla (1856–1943) Serbian American inventor

“Look at that! If you ever needed convincing that we live in the solar system, that we are on a ball of rock, orbiting around the Sun with other balls of rock, then look at that! That’s the solar system coming down and grabbing you by the throat.”

Brian Cox (physicist) (1968) English physicist and former musician

Watching a solar eclipse in Wonders of the Solar System, episode 1

“Ultimately the galaxy, indeed the sum of the universe in its entirety, was mostly nothing; average it all out and it made a pretty good vacuum. But within the foci of matter there were the systems, the stars and planets and habitats—what a cornucopia of life was there!”

Iain Banks Culture series

Source: Culture series, Matter (2008), Chapter 10 “A Certain Lack” (p. 167)

“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. ”

John Travolta (1954) American actor, dancer and singer

“There seems to be no end to the senseless wickedness done on this little planet in a minor solar system, and we puny mortals appear to be decreasing in importance so far as the universe is concerned.”

Alec Guinness (1914–2000) English actor

My Name Escapes Me (Penguin, 1997), 1st paperback edition, p. 57.

“An observer studying the Solar system dispassionately, and finding himself capable of bringing the four giant planets to his notice, could reasonably say that the Solar system consisted of one star, four planets, and some traces of debris.”

Isaac Asimov (1920–1992) American writer and professor of biochemistry at Boston University, known for his works of science fiction …

"Worlds In Order" in The Secret of the Universe (1992), p. 63
General sources

“If the expansion of the space of the universe is uniform in all directions, an observer located in anyone of the galaxies will see all other galaxies running away from him at velocities proportional to their distances from the observer.”

George Gamow (1904–1968) Russian-American physicist and science writer

Source: The Creation of the Universe (1952), p. 31

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