11 results for “red planet”
Planets & the Solar System
Mars
red planet is cold, dry and nearly airless today, but rivers once ran across it. Here
Article · 4 min read
Space & the Universe
Exoplanets: Worlds Around Other Stars
red then blue, and sensitive instruments can detect the rhythm. The size of the wobble tells you the planet
Article · 3 min read
Plants & Fungi
Photosynthesis: How Plants Eat Light
red and blue light strongly and reflects green, which is why plants look the colour they do. Chlorophyll sits in stacks of membranes inside tiny structures called chloroplasts, hundreds of which pack
Article · 3 min read
Planets & the Solar System
Jupiter
planet, and that speed shapes its weather. The spin stretches the clouds into the stripes you can see through any small telescope: pale zones where gas is rising, and darker belts where
Article · 3 min read
Planets & the Solar System
Uranus and Neptune
red light, which is why both planets appear blue. Neptune is a deeper shade, for reasons
Article · 4 min read
Planets & the Solar System
The Sun
red giant, engulfing Mercury and Venus and scorching the Earth, then shed its outer layers into space and shrink to a white dwarf the size of our planet
Article · 4 min read
Life & Biology
What Is Life? The Cell
planet. Others, like oak trees and people, are vast cooperatives. Your body is made of roughly 37 trillion cells of more than 200 kinds, each specialised: muscle cells that contract, nerve cells
Article · 4 min read
Space & the Universe
Nebulae
red one. Star nurseries The great emission nebulae are the places where stars are being born. Deep inside the Orion Nebula, infrared telescopes see hundreds of newborn stars still wrapped
Article · 3 min read
Planet Earth
The Atmosphere
planet with life. Layers The atmosphere has no sharp top; it simply thins out until it merges with space. Half its mass lies below about 5.5 kilometres, and 99 percent below
Article · 4 min read
Matter, Energy & Physics
Light
red, then yellow, then white as it heats, and a star's colour tells its temperature. Fireflies and deep-sea fish make light with chemistry. A laser makes it by persuading
Article · 4 min read
Space & the Universe
Galaxies and the Milky Way
red dwarfs are hard to detect even nearby. Estimates range from 100 billion to 400 billion. Most of them are small, cool and dim. Bright stars like the ones that form
Article · 4 min read
