A Quote by Neil deGrasse Tyson
In five billion years, the sun will expand and engulf our orbit as the charred ember that was once Earth vaporizes. Have a nice day
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On 24 October 1944 Planet Earth was following its orbit about the sun as it has obediently done for nearly five billion years.
The dead spacecraft in orbit have become a permanent fixture around our planet, not unlike the rings of Saturn. They will be the longest-lasting artifacts of human civilization, quietly circling Earth until the Sun turns into a Red Giant, about five billion years from now.
The dead spacecraft in orbit have become a permanent fixture around our planet, not unlike the rings of Saturn. They will be the longest-lasting artifacts of human civilization, quietly circling the Earth until the sun turns into a red giant about 5 billion years from now.
After the earth dies, some 5 billion years from now, after it's burned to a crisp, or even swallowed by the Sun, there will be other worlds and stars and galaxies coming into being - and they will know nothing of a place once called Earth.
Some 5 billion years from now, there will be a last perfect day on Earth... then the sun will begin to die, life will be extinguished, the oceans will boil and evaporate away.
The nice thing about asteroids is that once you've found them, and once you have a good solid orbit on them, you can predict a hundred years ahead of time whether there is a likelihood of an impact with Earth.
Most educated people are aware that we are the outcome of nearly 4 billion years of Darwinian selection, but many tend to think that humans are somehow the culmination. Our sun, however, is less than halfway through its lifespan. It will not be humans who watch the sun’s demise, 6 billion years from now. Any creatures that then exist will be as different from us as we are from bacteria or amoebae.
Cisco projects that in 2020, now just five years away, there will be seven billion people on the earth and 50 billion devices connected to the Internet. Six-and-a-half devices on average per person. As a father of five young adults and teenagers, I think we are - in my household, we've exceeded the 6.5 number.
Eventually, the Sun will swell to occupy the entire sky as its expansion subsumes the orbit of earth. Earth's surface temperature will rise until it matches the 3,000-degree rarified outer layers of the expanded Sun.... But not to worry. We will surely go extinct for some other reason long before this scenario unfolds.
Most Jupiter-sized planets orbit the mother star in a highly elliptical orbit. This means they will often cross the orbit of any Earth-like planet and fling it into outer space, making life impossible. But our Jupiter travels in a near-perfect circular orbit, preventing a collision with any Earth-like planet, making life possible.
The moon is not kept in her orbit round the earth, nor the earth in her orbit round the sun, by a force that varies merely in the inverse ratio of the squares of the distances.
NASA will send up a big sun shade that will be in orbit between the earth and sun and deflect 2 or 3 percent of the sunshine back into space. It would be cheaper than the international space station.
Earth has provided a stable platform for the evolution of life over 4 billion years. But that lease is limited; we know for sure that it will expire after a few billion more. . . . If we are wise, we will have furnished our new apartments long before that time.
I will say that the God concept is at the heart of 2001 but not any traditional, anthromorphic image of God. I don't believe in any of Earth's monotheistic religions, but I do believe that one can construct an intriguing scientific definition of God, once you accept the fact that there are approximately 100 billion stars in our galaxy alone, that each star is a life-giving sun and that there are approximately 100 billion galaxies in just the visible universe.
If we could magically transport ourselves back to the young Earth, when it was only a billion years old or two billion years old or three billion years old or four billion years old, we wouldn't be able to survive. We would have a hard time surviving if we were transported to the time when dinosaurs were around.
Since September it's just gotten colder and colder. There's less daylight now, I've noticed too. This can only mean one thing - the sun is going out. In a few more months the Earth will be a dark and lifeless ball of ice. Dad says the sun isn't going out. He says its colder because the earth's orbit is taking us farther from the sun. He says winter will be here soon. Isn't it sad how some people's grip on their lives is so precarious that they'll embrace any preposterous delusion rather than face an occasional bleak truth?
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