Can humans go to the Andromeda Galaxy?
The Andromeda Galaxy is 2.5 million light-years away from Earth, which is a distance that is impossible for us humans to reach. Not only can we not go to the Andromeda Galaxy, but we can't go to the Milky Way Galaxy, and we can't even fly out of our solar system to reach our neighboring stars.
Why do you say that? First, the factor of our human life span, the average human life span is generally within 120 years. Now living conditions are better, but some centenarians are still very few. And from the perspective of our human body functions, the time of work, this time from the age of 18 to 60 years old retirement, this period is only 42 years, think about what concept this is. Even if we start from 1 eighteen years old to take the spacecraft, forty-two years later, we humans are still wandering around in the solar system.
There is also a problem is energy, long-distance flight to the way is certainly need enough energy, whether it is the fuel for flight or we humans eat food and water, just so obviously can not reach, and also not down to reality. If we want to start interstellar flight, we will have to find a planet like the current gas station, at some distance to build our human resources supply station to do.
One of them is that we humans are very slow, a light year we humans need to spend 30,000 years of time, compared to the first point, this is certainly unrealistic, even from our nearest neighboring stars also need 4.2 light years distance to reach, we humans need more than 100,000 years of time, let alone 2.5 million light years away from the Andromeda Galaxy, and do not mention the Milky Way, we humans simply can not arrive.
