Yes, even in millions of years, traces of human civilization should still be easily detectable by a future civilization. The geological record will contain many elements that don’t occur naturally and would point to an industrial civilization. Some relics of human civilization will fossilize or otherwise be preserved. Finally, there will be well preserved human-made objects in space, either in high earth orbit or on the moon.
Yes, even in millions of years, traces of human civilization should still be easily detectable by a future civilization. The geological record will contain many elements that don’t occur naturally and would point to an industrial civilization. Some relics of human civilization will fossilize or otherwise be preserved. Finally, there will be well preserved human-made objects in space, either in high earth orbit or on the moon.
Won’t they be blasted by space radiation in the long run?