Science 1. What will the earth look like in 50 billion years? 2. Humans set foot on Mars in __ year. Why?

Who asked this question?

1. The sun has only a few billion years left in its lifespan. I can tell you for sure that in 50 billion years the earth will have merged with the sun.

Because after the death of the sun, it will become a red giant and expand hundreds of times in size, so that Venus and Mercury have been swallowed by the sun, and the earth will also be scorched, but the scorching is not over. Due to the resistance of solar particles, the earth's orbit will get closer and closer to the sun, and finally crash on the surface of the sun. You can imagine what it looks like when ice cream falls into a frying pan.

2. The second question is purely a YY question. But I guess our generation may not be able to see it. As for why, I feel that the people who want to draw out the questions are too talkative. Because there are too many reasons, including strategic factors between countries and factors such as human beings’ endless desire to explore. I think the most important thing is that the sun’s engulfing of the earth has been affirmed by the scientific community. Human beings must flee to other stars, and Mars It is a star farther from the sun (in the next orbit after the earth, after the sun evolves into a red giant, the earth cannot stay, but Mars seems to have an acceptable temperature.) And Mars is in the solar system, so it can be more convenient migrant. But eventually Mars will be unreliable, and the entire solar system will eventually perish. At that time, we can only think of ways to go to other galaxies. . .