2 results for “dark matter”
Planet Earth
Rocks, Minerals and Fossils
dark rock of the ocean floor and of Hawaii. If it cooled slowly underground over thousands of years, the crystals grew large, as in granite, with its speckles of pink feldspar, grey
Article · 4 min read
Planet Earth
Inside the Earth
dark basalt that erupted from undersea volcanoes. Under the continents it is thicker, up to seventy kilometres beneath mountain ranges, and made of lighter granite-like rock. Compared with the planet
Article · 4 min read
