There is still a lot of water hidden in the crust of Mars? NASA found another, or overturned previous inferences There is still a lot of water hidden in the crust of Mars? NASA found another, or overturned previous inferences
The inside of the earth is as hot as the sun. Where does its energy come from? The inside of the earth is as hot as the sun. Where does its energy come from?
Scientists speculate that the ninth planet of the solar system may not be a planet at all but a primordial black hole Scientists speculate that the ninth planet of the solar system may not be a planet at all but a primordial black hole
Why didn’t the advanced civilization visit the earth? Maybe in their opinion, the level of human civilization is too low Why didn’t the advanced civilization visit the earth? Maybe in their opinion, the level of human civilization is too low
If ocean area and land area are reversed and interchanged, what impact will it have on human survival? If ocean area and land area are reversed and interchanged, what impact will it have on human survival?
An ancient star may be about 14 billion years old, which is older than the age of the universe An ancient star may be about 14 billion years old, which is older than the age of the universe
A galaxy 32 billion light-years away can reach 2.3 times the speed of light. Does it contradict the theory of relativity? A galaxy 32 billion light-years away can reach 2.3 times the speed of light. Does it contradict the theory of relativity?
What will the earth look like in 200 million years? Do you believe the guess given by the scientist? What will the earth look like in 200 million years? Do you believe the guess given by the scientist?
There are countless stars in the universe. Why can’t the light from them illuminate the earth? There are countless stars in the universe. Why can’t the light from them illuminate the earth?
If mankind disappears and a new civilization is born 65 million years later, will we find that we have existed? If mankind disappears and a new civilization is born 65 million years later, will we find that we have existed?
