9 results for “early Earth”
Life & Biology
The Origin of Life
early Earth was delivered such molecules by the tonne and made more of its own. From
Article · 4 min read
Planet Earth
Inside the Earth
Beneath your feet lie 6,370 kilometres of rock and metal, hotter than the surface of
Article · 4 min read
Planets & the Solar System
Mars
Earth. Its early lakes were habitable by any reasonable definition, and because the planet has been
Article · 4 min read
Planets & the Solar System
Mercury and Venus
Earth's size, 95 percent of its diameter and 82 percent of its mass, and made of similar rock. Early
Article · 3 min read
Space & the Universe
Dark Matter and Dark Energy
early universe would never have collapsed into galaxies in time; there would be no Milky Way and no Earth
Article · 3 min read
Planets & the Solar System
The Moon
Earth, are the original crust, saturated with craters. The dark patches, which early astronomers named maria
Article · 4 min read
Space & the Universe
The Life of a Star
Earth to a ball twenty kilometres across. The collapse rebounds and tears the rest of the star apart in a supernova, one of the most violent events in nature, briefly outshining
Article · 3 min read
Space & the Universe
Black Holes
Earth smaller and smaller without removing any mass. Its surface gravity rises, and so does the escape velocity. Squeeze it to the size of a marble and the escape velocity reaches
Article · 3 min read
Animals
Birds
Earth's magnetic field, probably through molecules in the eye that respond to it, and use it as a compass. Owls hear so precisely that they can catch a mouse under snow
Article · 3 min read
