A Quote by Carl Sagan

The boundary between space and the earth is purely arbitrary. And I'll probably always be interested in this planet - it's my favorite. — © Carl Sagan
The boundary between space and the earth is purely arbitrary. And I'll probably always be interested in this planet - it's my favorite.
When the space shuttle's engines cut off, and you're finally in space, in orbit, weightless... I remember unstrapping from my seat, floating over to the window, and that's when I got my first view of Earth. Just a spectacular view, and a chance to see our planet as a planet.
Yet soil is miraculous. It is where the dead are brought back to life. Here, in the thin earthy boundary between inanimate rock and the planet's green carpet, lifeless minerals are weathered from stones or decomposed from organic debris. Plants and microscopic animals eat these dead particles and recast them as living matter. In the soil, matter recrosses the boundary between living and dead; and, as we have seen, boundaries-edges-are where the most interesting and important events occur.
Eros is an issue of boundaries. He exists because certain boundaries do. In the interval between reach and grasp, between glance and counterglance, between ‘I love you’ and ‘I love you too,’ the absent presence of desire comes alive. But the boundaries of time and glance and I love you are only aftershocks of the main, inevitable boundary that creates Eros: the boundary of flesh and self between you and me. And it is only, suddenly, at the moment when I would dissolve that boundary, I realize I never can.
It was our favorite part of the day, this in-between time, and it always seemed to last longer than it should--a magic and lavender space unpinned from the hours around it, between worlds.
On my second space walk, I was riding the Canadarm, heading down toward the payload bay of the space shuttle, and I could see the space shuttle highlighted against the Earth in the background, and there was this black, infinite, hostile void of space. I remember looking down at the Earth and thinking, "Beneath me is a 4½-billion-year-old planet, upon which the entire history of the human species has taken place." That was an incredibly humbling moment, and I had a bit of an epiphany.
The Earth is a beautiful planet. The space station is a great vantage point to observe it and share our planet in pictures. It makes you more of an environmentalist.
Time and space are finite in extent, but they don't have any boundary or edge. They would be like the surface of the earth, but with two more dimensions.
The health of our home planet and the survival of our species will only be secured through the use of space resources and the expansion of Earth's economic sphere to the Moon and beyond. Creating an off-Earth economy and multi-planet civilization will safeguard the long term prospects of humanity.
A new consciousness is developing which sees the earth as a single organism and recognizes that an organism at war with itself is doomed. We are one planet. One of the great revelations of the age of space exploration is the image of the earth finite and lonely, somehow vulnerable, bearing the entire human species through the oceans of space and time.
We have one planet in our solar system that's habitable, and that's the Earth, and space travel can transform things back here for the better. First of all, by just having people go to space and look back on this fragile planet we live on. People have come back transformed and have done fantastic things.
I hope that vigorous space exploration continues and that humankind will have a space station that resides between Earth and the moon. Outside the gravitational field of Earth, we could launch robotic spacecraft to other destinations in our solar system.
The frontier in space, embodied in the space colony, is one in which the interactions between humans and their environment is so much more sensitive and interactive and less tolerant of irresponsibility than it is on the whole surface of the Earth. We are going to learn how to relate to the Earth and our own natural environment here by looking seriously at space colony ecologies.
I've always been a sci-fi geek, and I've always loved it. It's my favorite genre of all. The irony of ironies is that, in my early career, I just really never worked in it. "Star Trek" was very interested in me, partially because I did "From the Earth to the Moon," and I was really interested in them, but the timing just never worked out.
I'm interested in the murky areas where there are no clear answers - or sometimes multiple answers. It's here that I try to imagine patterns or codes to make sense of the unknowns that keep us up at night. I'm also interested in the invisible space between people in communication; the space guided by translation and misinterpretation.
My favorite models are always going to be the people who are pushing the boundary and challenging what it is to be a model.
The Lord may want to colonise other Worlds with His new perfect children! What's the whole Universe for and all this huge amount of space if He's only interested in colonising one little Planet? What an incubation! What an incubator for other civilizations!-Right here on the New Earth and the Heavenly City!
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