13 results for “grain”
Plants & Fungi
Seeds
grain of wheat in a loaf of bread is the same device that let the first
Article · 4 min read
Plants & Fungi
Flowers and Pollination
grain lands on the right flower, it grows a tube down into the ovary and fertilises
Article · 4 min read
Space & the Universe
Galaxies and the Milky Way
grain of sand held at arm's length, it found thousands of galaxies. Scaling up, astronomers
Article · 4 min read
Planets & the Solar System
Saturn
grains to boulders the size of houses, each on its own orbit, occasionally colliding and clumping
Article · 4 min read
Planet Earth
The Atmosphere
Grains of dust and rock from space hit the air at tens of kilometres per second
Article · 4 min read
Space & the Universe
The Big Bang
grain of sand. About 13.8 billion years ago that space began to stretch. It has not stopped
Article · 4 min read
Space & the Universe
Nebulae
grains of carbon and silicate, like fine soot and sand, which block starlight and make parts
Article · 3 min read
Animals
Insects
grains and little else. They recycle dead plants, animals and dung at a scale no other
Article · 3 min read
Plants & Fungi
Photosynthesis: How Plants Eat Light
grains and potatoes. Doing it is far from simple. It involves dozens of steps and some
Article · 3 min read
Matter, Energy & Physics
Atoms
grains knocked by invisible molecules, the scattering of particles fired at gold foil that revealed the tiny
Article · 4 min read
Planet Earth
Rocks, Minerals and Fossils
grained, like basalt, the dark rock of the ocean floor and of Hawaii. If it cooled
Article · 4 min read
Planets & the Solar System
Comets, Asteroids and Pluto
grain meteors that burn up harmlessly as shooting stars. Larger objects are rarer but real. A ten-kilometre
Article · 4 min read
Matter, Energy & Physics
Gravity
The weakest force in nature holds planets in orbit, lights the stars and shapes the universe
Article · 4 min read
