Data collected by NASA's InSight lander suggest that ancient internal processes are responsible for the "Martian dichotomy" ...

One photographer put the age of starlight into perspective with stunning projections on some of Earth's oldest rock ...

BUT Planet Earth's resources are limited! Our 4-billion-year-old planet has limited natural resources like oil, gas, coal, lithium, cobalt, manganese, etc. that are being extracted at alarming rates.

Giant blobs that lurk near Earth's core are ... part of the mantle is made of old tectonic plates that break into tiny pieces when they sink deep enough into the planet. The LLSVPs, by contrast ...