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Anonymous users2024-02-15There is no way back to leave the Earth's atmosphere without power, and it is necessary to break through the atmosphere to return to Earth when there is power.
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Anonymous users2024-02-14If you leave the Earth ten light-years away, you will basically not be able to come back. Because it is very likely that he will already die of old age in the process of coming back.
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Anonymous users2024-02-13I think it's hard to come back as long as it's beyond the confines of the planet. As long as the human body is not on this planet of the earth, it cannot come back.
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Anonymous users2024-02-12You are wrong, the earth is in the solar system, the solar system is in the Milky Way, that is, we are also in the Milky Way, not the earth does not belong.
Even if astronomers always say how many light years are away, although the light year is the most common unit in astronomy, but it is not as simple as words, you think that 1 light year is very short, and it is known that 1 light year is the distance traveled in one year, and the speed of light in a vacuum is about 300,000 kilometers in US seconds. 1 light-year is easy to say, but it's a distance that would still be out of reach even if it took a person a lifetime with the fastest flying machine in the world.
Now the most manned spacecraft is to send humans to the moon about 380,000 kilometers away from the earth, the next goal is to send humans to Mars, to Mars now at the fastest will take half a year, but manned landing on Mars is still a big technical difficulty, after all, manned space vehicles need to maintain human survival, and maintaining human survival in space for a long time is a very difficult thing, a little problem may kill people, unlike the space station and ground supplies, If you embark on an interstellar journey without any ground supplies and have to be self-sufficient, you can imagine for yourself how difficult this is.
If it is an unmanned probe, many have been launched, such as Voyager 1, Cassini, Curiosity, Spirit, China's Chang'e-1 and 2, and Chang'e-3 will be launched this year to achieve a soft landing on the moon. Voyager 1 has flown past Pluto into the Kuiper Belt, but it still hasn't left the solar system.
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Anonymous users2024-02-11How many light-years is the farthest galaxy ever discovered?
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Anonymous users2024-02-10At present, people can go as far as the moon. The unmanned sounding equipment has already left the solar system.
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Anonymous users2024-02-09Fly out of the solar system in a limited amount of time and reach the Milky Way, but never fly out of the Milky Way.
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Anonymous users2024-02-08At present, the farthest human beings have left the earth is the Apollo moon landing, which is about 280,000 kilometers away from the earth;
The artificial satellite is only tens of thousands of kilometers away from the earth (apogee), and if it is too far away from the earth, it is not called an artificial satellite;
The Artificial Space Probe Traveler has been flying for thirty-six years now, flying tens of billions of kilometers, billions of kilometers from the Earth, and has long since entered interstellar space beyond the solar system, and is still sending signals back to the Earth!
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Anonymous users2024-02-07Today's technology is able to know the microwave background radiation of the entire universe.
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Anonymous users2024-02-06Humanity is rushing out of the solar system!
Voyager No. 1 (below paste).
At 12:56 on September 5, 1977, he departed from Cape Canaveral Air Force Base in the United States and left Earth.
In December 1977, he caught up with his twin brother "Voyager 2", who was the first to leave Earth.
It left the asteroid belt in September 1978.
In March 1979, I "visited" Jupiter up close and saw the aurora on the back of Jupiter.
In November 1980, he "visited" Saturn at close range and sent back more than 10,000 color paintings**.
In 1989, it headed for the center of the Milky Way.
The edge of the solar system was reached in May 2012.
In June 2012, the probe, traveling at a speed of about 17 kilometers per second and about 18 billion kilometers from Earth, reached the edge of the solar system and is expected to become the first man-made object to break out of the solar system.
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Anonymous users2024-02-05People leave the Earth about 7,000 kilometers or so, and they cannot return to the Earth by gravity.
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Anonymous users2024-02-04When you leave about 300 kilometers, gravity cannot resist the centrifugal force of the Earth's rotation, and there is no way to return to the Earth without relying on external forces.
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Anonymous users2024-02-03I think that after leaving the atmosphere outside the Earth, people should not be limited by the gravitational pull of the Earth. So I don't think there's a way for people to get back to Earth by gravity when they're outside the Earth's atmosphere.
When an object reaches a speed of one kilometer per second, it can break free from the gravitational pull of the Earth. In the process of getting rid of the shackles of the earth, under the action of the earth's gravity, it does not fly away from the earth in a straight line, but in a parabola. >>>More
It should be able to survive, but so far I haven't found a living environment similar to the earth! The universe is big and limitless, and the earth is just a drop in the ocean! After the continuous exploration of human beings, we will definitely find the corresponding living environment! Whether it's Jupiter. >>>More
Throw away the watch, lose the jacket, bm e lose the backpack, throw away the nagging, bm e lose the TV, lose the computer, bm e lose the brain, throw away the troubles again, bm e g fm, what is big, what is small, what is the opposite, bm e hate more, love less, g e bm fm, just want to jump more and more crazy Jump higher and higher Throw off the earth bm g a bm fm a heart puff puff and puff a bm fm forget all the troubles and troubles for a moment g fm g bm I don't want to never e bm fm fm grieved myself for a second bm e a heart puff puff and pam and bm and forget all the troubles and troubles in a moment g fm g I never want to be wrong with myself for a second bm e a heart puff and puff and beat wildly a bm fm a moment of troubles, troubles, all forgotten g fm g bm e bm fm I get rid of the earth the earth get rid of the more you jump higher bm e lose the watch lose the jacket bm e throw away the backpack and then throw away the nagging bm e lose the TV lose the computer bm e lose the brain and then throw away the troubles bm e g fm is ambitious and timid to dance and rely on others to teach you bm e hate a lot of love g e fm g bm fm just want to jump more crazy and jump higher and higher get rid of the earth bm e a heart puff and puff a bm fm Forget all your troubles for a moment bm e fm bm bm I don't want to do it again d bm fm fm wronged myself for a second bm e a heart puff puff a bm fm a bm fm a bm fm a bm e fm bm d bm fm I get rid of the earth as long as I jump higher and higher.
Bring a fully charged phone for easy contact and see how you can get back to Earth.
It may be like in "The Martian", on the vast Martian plain. God sits on the circle of the earth, and the inhabitants of the earth are like locusts. He spreads out the firmament like a curtain, and the heavens like a tent to live in.