Was there a civilization on Earth before humans?

Re:Was there a civilization on Earth before humans? by zw123456 on Saturday April 14, 2018 @11:17AM (#16837663)

We left some evidence of our existence on the moon so the next civilization will be able to find that even millions of years from now, perhaps.

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Re:Was there a civilization on Earth before humans? by anoncoward778 on Saturday April 14, 2018 @11:37AM (#16837753)

The American flag is already bleached out. All that is needed is something to remove and disturb the other items left on the surface of the moon, say one or two good asteroid/meteorite strikes We pass across meteorite showers on a constant consistent basis. That evidence wont last 1000 years let alone 60 million

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Re:Was there a civilization on Earth before humans? by koboll on Saturday April 14, 2018 @11:37AM (#16837757)

Does LIDAR penetrate dust? I wonder what we might find if we scanned the entire Moon...

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Re:Was there a civilization on Earth before humans? by c22 on Saturday April 14, 2018 @01:12PM (#16838250)

We have LIDAR scans of most of the moon.

https://www.nasa.gov/multimedia/imagegallery/image_feature_2...

https://nssdc.gsfc.nasa.gov/planetary/clementine.html

https://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1994...

https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/201200...

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Re:Was there a civilization on Earth before humans? by ryl00 on Saturday April 14, 2018 @02:58PM (#16838843)

Maybe a monolith? ;)

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