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Our solar system was doing just fine without humanity for 99.995% of its lifetime Our Solar System is quite “young”, at least as far as solar systems go. Using radiometric dating, scientists were able ...

The idea of cosmic threats to Earth almost sounds like the stuff of fiction. But while alien invasions may be far fetched, ...

The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth’s terra firma. The terrestrial planets are the four innermost planets in the ...