Study links continent creation to 200-million year galactic comet cycle
When comets strike Earth they excavate & melt large portions of the mantle causing the molten rock to rise to the surface & float
NASA’s Webb telescope makes first ever detection of carbon dioxide on alien world
“It was a special moment, crossing an important threshold in exoplanet sciences”
Scientists say exoplanet 100 light years from Earth may be covered with deep ocean
The exoplanet orbits "a nearby visual-binary M dwarf" star