42 results for “Earth”
Planets & the Solar System
The Moon
Earth The Moon's gravity pulls harder on the near side of Earth than the far side
Article · 4 min read
Planet Earth
Inside the Earth
Earth and there are about 6,370 kilometres of planet beneath you. Humans have explored almost
Article · 4 min read
Planets & the Solar System
Mercury and Venus
Earth's evil twin Venus is nearly Earth's size, 95 percent of its diameter and 82 percent
Article · 3 min read
Planets & the Solar System
The Sun
Earth, fusing 600 million tonnes of fuel a second. Everything alive on Earth runs on its light
Article · 4 min read
Planets & the Solar System
Jupiter
Earth, a magnetic field that could swallow the Sun, and moons that may hide oceans of liquid
Article · 3 min read
Planets & the Solar System
Mars
Earth. It is small, about half Earth's diameter and a tenth of its mass, so you would
Article · 4 min read
Space & the Universe
Exoplanets: Worlds Around Other Stars
Earths" and "mini-Neptunes", planets between the size of Earth and Neptune. There is nothing like
Article · 3 min read
Life & Biology
The Origin of Life
Earth was a ball of molten rock under a sky of steam and carbon dioxide, hammered
Article · 4 min read
Space & the Universe
The Life of a Star
Earth. Every star is a battle between two forces. Gravity pulls inward, trying to crush the star
Article · 3 min read
Matter, Energy & Physics
Gravity
Earth all the time, but it is also moving sideways so fast that it keeps missing
Article · 4 min read
Planets & the Solar System
Comets, Asteroids and Pluto
Earth, and may have helped stock the oceans and the chemistry that led to life. The Kuiper
Article · 4 min read
Planet Earth
Volcanoes
Earth breaks through to the surface, and they are far more varied, more common and more
Article · 4 min read
Planet Earth
Rocks, Minerals and Fossils
Earth's crust is dominated by about a dozen. Most of them are silicates, combinations of silicon
Article · 4 min read
Planets & the Solar System
Saturn
Earth's diameter, and like Jupiter it is a ball of hydrogen and helium with no solid
Article · 4 min read
Planets & the Solar System
Uranus and Neptune
Earth, orbit two planets that no one saw until the age of telescopes. They are not quite
Article · 4 min read
Planet Earth
Weather and Climate
Earth unevenly, warming the tropics far more than the poles, and the atmosphere and oceans move
Article · 4 min read
Planet Earth
Plate Tectonics and Earthquakes
Earth's climate within the range where liquid water and life can exist. Earth is the only
Article · 4 min read
Space & the Universe
Space Exploration
Earth all the time, but it moves sideways at about 28,000 kilometres per hour, so the ground
Article · 3 min read
Life & Biology
Dinosaurs and Mass Extinctions
Earth has nearly been wiped out at least five times. What a dinosaur is Dinosaurs were
Article · 3 min read
Space & the Universe
Black Holes
Earth's escape velocity. Now imagine squeezing the Earth smaller and smaller without removing any mass
Article · 3 min read
Plants & Fungi
Photosynthesis: How Plants Eat Light
Earth, including you, is fed by it. The recipe The reaction is simple to write down
Article · 3 min read
Life & Biology
Bacteria and Viruses
Earth, all of them invisible. Microbes, organisms too small to see, were the only life on the planet
Article · 4 min read
Planet Earth
The Atmosphere
Earth habitable, is only about as thick in proportion to the planet as the skin on an apple
Article · 4 min read
Animals
Animal Migration
Earth's magnetism and memory. Here is how, and why. Every autumn, a monarch butterfly that
Article · 4 min read
Life & Biology
What Is Life? The Cell
Earth, all life is made of cells, and if you want to understand what life is, you start
Article · 4 min read
Animals
The Octopus
Earth. The last common ancestor of humans and octopuses lived about 600 million years ago, and it was probably
Article · 3 min read
Planet Earth
The Oceans
Earth is a blue planet with some land on it. Water covers 71 percent of the surface
Article · 4 min read
Plants & Fungi
Trees and Forests
Earth are trees, and the forests they form hold most of the planet's land species
Article · 4 min read
The Human Body
The Heart and Blood
Earth more than twice. What blood is Blood is about 55 percent liquid, a straw-coloured
Article · 4 min read
Space & the Universe
Dark Matter and Dark Energy
Earth. Dark energy, meanwhile, decides the future. If it keeps pushing, galaxies beyond our local group
Article · 3 min read
Matter, Energy & Physics
Electricity and Magnetism
Earth is itself a huge magnet, its field produced by the churning of liquid iron in its core
Article · 4 min read
Matter, Energy & Physics
Atoms
Earth; chemistry, by contrast, only rearranges which atoms are bonded to which. Atoms of the same
Article · 4 min read
Animals
Mammals
that inherited the Earth from the dinosaurs is being thinned by one of its own members.
Article · 4 min read
Life & Biology
DNA and Genes
Earth descends from a single ancestor. Your genome The complete set of DNA in an organism
Article · 4 min read
Chemistry
The Chemistry of Life
uses the same molecules is powerful evidence that all life on Earth shares a common origin.
Article · 3 min read
Chemistry
Water: The Strangest Ordinary Substance
Earth would have no liquid oceans at all. Ice that floats Almost every substance gets denser
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
Article · 3 min read
Animals
Insects
Earth, the overwhelming majority would be insects. Around a million species have been named, more than
Article · 3 min read
Space & the Universe
Nebulae
Earth are still denser than most nebulae. They only appear solid because they are so enormous
Article · 3 min read
The Human Body
Digestion
Earth: trillions of bacteria of hundreds of species, weighing a kilogram or more. They ferment the fibre
Article · 4 min read
Matter, Energy & Physics
Light
Earth more than seven times in a second, to the Moon in 1.3 seconds and to the Sun in eight
Article · 4 min read
Matter, Energy & Physics
The Periodic Table
earths and the heavy radioactive elements, including uranium and plutonium. Metals occupy the left and centre
Article · 4 min read
