"The wow signal came from a planet/bit in space 17,000 light-years away. It emitted a signal 30x stronger than anything we can make today.
It lasted for an entire 71 seconds, was on 1444Hz (frequency of hydrogen, most abundant thing in the universe) and we couldn’t find the signal again after pointing to the same spot."
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Buren 2 year s ago
#15 Actually, fungi evolved 1.3 billion yrs ago, and trees about 700 million yrs. Also interesting to note is that fungi are more closely related to animals than they are to plants.
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Biddie 2 year s ago
If the Milky Way were the size of the continental US, our solar system would be the size of the nucleus of a single cell. The universe is so vast that our minds are not able to fully grasp it's size. We can do the math, but due to our relative perception of the world, we can't actually process the sheer volume of space between objects.
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Edie 2 year s ago
#16 total BS. Same metal surfaces touch each other on the space station all the time.
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Elisa 2 year s ago
Edie,
Just look up "cold welding," dummy. Maybe you'll learn something today.
Just look up "cold welding," dummy. Maybe you'll learn something today.
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Marge 2 year s ago
Elisa,
Is cold welding in space real?
Don't worry, though, cold-welding in space, despite the seeming ease of it, doesn't happen very often. Typically, all metals launched into space have a thin coating of oxidation on them due to contact with the Earth's atmosphere. Once in orbit, the coating is usually still present, so cold-welding doesn't occur.
Is cold welding in space real?
Don't worry, though, cold-welding in space, despite the seeming ease of it, doesn't happen very often. Typically, all metals launched into space have a thin coating of oxidation on them due to contact with the Earth's atmosphere. Once in orbit, the coating is usually still present, so cold-welding doesn't occur.
Just look up "cold welding," dummy. Maybe you'll learn something today.
Is cold welding in space real?
Don't worry, though, cold-welding in space, despite the seeming ease of it, doesn't happen very often. Typically, all metals launched into space have a thin coating of oxidation on them due to contact with the Earth's atmosphere. Once in orbit, the coating is usually still present, so cold-welding doesn't occur.