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wolram
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can life travel to other worlds from earth?
http://www.nature.com/nsu/040216/040216-20.html
http://www.nature.com/nsu/040216/040216-20.html
selfAdjoint said:As a vision, of course it's possible (as well as amusing), but it raises the question, where did those picnickers come from. What jump-started their biology? Seem to me there are two alternatives:
- Some bacterium was first.
- Closed timelike curves, as in Heinlein's story "All You Zombies".
What do you think?
References please!Dayle Record said:*SNIP
In the German photos from Mars, there are great green strike marks, and material seems to be ejected from the strike sites across the face of the planet. That stuff is all shown as green. They say that is olivine, ...
This is a complex question with no definitive answer. While there is still much we don't know about the universe, scientists have discovered several planets that have the potential to support life. However, whether or not life actually exists on these planets is still uncertain.
As of now, there is no known way for life to travel from Earth to other worlds. Current technology and spacecraft are not capable of traveling to other planets outside of our solar system in a reasonable amount of time. However, scientists are constantly researching and developing new technologies that may one day make interstellar travel possible.
It is unlikely that humans could survive on other worlds without significant technological advancements. The conditions on other planets, such as extreme temperatures and lack of breathable air, make it difficult for humans to survive without protective gear and advanced technology.
To date, there is no concrete evidence that life from Earth has been found on other worlds. Some scientists theorize that microorganisms may have been carried to other planets on spacecraft, but this has not been confirmed.
Yes, there are several ongoing missions and projects aimed at searching for life on other planets. This includes the Mars 2020 mission, which will search for signs of microbial life on the red planet, and the James Webb Space Telescope, which will examine the atmospheres of exoplanets for signs of habitability.