How Terrible Is The Reproductive Isolation Of Earth's Species? Is There Reproductive Isolation Between Humans And Animals?
The existence of reproductive isolation, so that these situations can not occur, even if there are some individuals of different species sometimes complete the mating, but they generally can not produce offspring, or produce offspring can not continue to reproduce
Would An Alien Civilisation Reveal Itself Voluntarily? 355 Light Years Away, An Abnormal Star Appears
Compared to radio messages sent by humans, this method seems to be more suitable for intelligent civilizations to announce their presence in the universe, because this method belongs to the "broadcast" in space, and intelligent civilizations in all directions can be observed
Why Have No Advanced Civilizations Visited Earth? Perhaps In Their Eyes, Humans Are Just Ants
Intelligent life is rare in the universe, or perhaps it is just wishful thinking on our part. As mentioned earlier, just in the galaxy, there are hundreds of millions of planets that have the natural conditions to nurture life, so a reasonable speculation is that life has evolved on many planets, and even a number of planets have evolved intelligent life.
How Scary Is It That Pluto's Atmosphere Is Disappearing? It's Not Wrong To Be Kicked Off The Planet List
There are many rumors that Pluto is a terrible world, where the temperature is so low that no life can survive, and even if there is life, it may be some extreme virus, so how terrible and unusual is Pluto?
Just 36.5 Light-Years From Earth, Another 'Super-Earth' Has Been Discovered That May Contain Extraterrestrial Life
Proxima, a slightly smaller red dwarf than Ross 508, has been frequently observed by astronomers as a giant flare in the past.
Coincidence Or Something Else? Why Do We Never See The Back Of The Moon?
The moon is the closest planet to the earth and the brightest and most easily observed object in the earth's night sky. Because the moon is always facing the same way towards the earth, for us humans living on earth, we can only ever observe one fixed side of the moon.