Here's What Life Might Look Like on Another 'Strange Rock'

If a human finds an alien, these extraordinary creatures may not look like us, but they may be more like some of our simpler Earth neighbors : Microorganism

This is the idea of ​​a new episode called "One Strange Rock" by National Geographic magazine. Astronauts explain why they can focus on finding living organisms with low intelligence in the universe.

"A biped walking character that looks very human, it enters the door and" I just evolved into another planet, only a few people are around us. You should not. And the doctor Maye Misimison said in an episode. "But do you think I have a simple life elsewhere? Absolutely." [The six most likely places to find alien life]

Unicellular microorganisms are the only creature on our planet, due to the 4 billion years history of the Earth as a life supporting planet. Multicellular organisms such as animals and plants have just started to occur about 600 million years ago. Homo sapiens has existed on the earth for about 300,000 years, and industrial civilization has existed for about 300 years.

If we define Homo sapiens as "smart", this means that intelligent life forms can only exist for about 0.008% of life on Earth. If you are looking for "smart" aliens to focus on technically advanced aliens, it is difficult for astronomers to find clever aliens, and the astronaut will explain tonight in the "Great Rock" episode I will. . But as long as you are looking for an appropriate extrasolar planet the possibilities of microbial life and other simple creatures such as algae and plants are much higher.

"For most of the possibilities, if you find a living planet, it may be very simple," NASA astronaut Jeff Hoffman retired in series.

However, even if an astronomer discovers an outer planet like the Earth, its primitive life forms follow the same path of evolution as the Earth's life forms. For example, Mr. Jemison explains that the plant may not be green on other planets. Because they evolved to absorb and reflect light of different colors from different types of stars.

For details on the evolution of life on other planets and the complex life on Earth, please visit the National Geographic Channel 's One Strange Rock tonight at 10 pm (May 14 th). EDT / PDT (9 PM)

Please contact Hanneke Weitering at hweitering@space.com or follow her @ hannekescience. Follow @ Spacedotcom, Facebook, Google +. Original article on Space.com

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A dramatic close-up view of black volcanic rocks and contrasting salt crystals evokes the possibility of replacing living bodies while conveying a sense of the world of aliens resembling ours. Film director Anne Milne says that: "I would like to explore the idea that we might look like another planet, a mimetic of the Earth." "What do these planets look like" A beach in the volcano of Rapuluma on the west coast of Africa, Shiota, the rainforest evokes a creepy ecstasy, but they also remind us of the ancient history of our planet, thinking about this idea, we are seeking answers to other planets. Their potential to feed living creatures is to understand ourselves.