If aliens exist, will they breathe oxygen? Scientists guess it might be hydrogen If aliens exist, will they breathe oxygen? Scientists guess it might be hydrogen
Flying 22.4 billion kilometers, the last photo of the earth made humans think deeply, what do we see? Flying 22.4 billion kilometers, the last photo of the earth made humans think deeply, what do we see?
Is there a cosmic wall 15 billion light years away? What is the nature of the wall of the universe that traps us in it? Is there a cosmic wall 15 billion light years away? What is the nature of the wall of the universe that traps us in it?
Flying 18.5 billion kilometers, Voyager discovered strange things, and the interstellar space became denser and denser Flying 18.5 billion kilometers, Voyager discovered strange things, and the interstellar space became denser and denser
What kind of power system is used by an alien spacecraft that can cross the interstellar to the earth? What kind of power system is used by an alien spacecraft that can cross the interstellar to the earth?
The Curiosity rover photographed a fire on Mars. It is clearly visible. What would it be? The Curiosity rover photographed a fire on Mars. It is clearly visible. What would it be?
6.5 billion kilometers away, the photos taken by New Horizons show us a strange world 6.5 billion kilometers away, the photos taken by New Horizons show us a strange world
The spacecraft reached 21.6 billion kilometers away and got a pessimistic result: unable to fly out of the solar system The spacecraft reached 21.6 billion kilometers away and got a pessimistic result: unable to fly out of the solar system
A law of physics that makes people very desperate, through which we seem to see the future of the universe A law of physics that makes people very desperate, through which we seem to see the future of the universe