8 results for “red giant”
Space & the Universe
The Life of a Star
red giant. When the Sun does this, in about five billion years, it will swell past
Article · 3 min read
Planets & the Solar System
Jupiter
giant collision long ago stirred it into the surrounding layers. The fastest spinner Jupiter rotates in less than ten hours, faster than any other planet, and that speed shapes its weather
Article · 3 min read
Planets & the Solar System
The Sun
red giant, engulfing Mercury and Venus and scorching the Earth, then shed its outer layers into
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
Animals
The Octopus
giant Pacific octopus has escaped through a hole the size of a coin. It has three hearts: two pump blood through the gills and one through the body. Its blood is blue
Article · 3 min read
Planets & the Solar System
Uranus and Neptune
giants, but the resemblance ends there. Beneath the clouds, most of their bulk is a hot, dense fluid of water, ammonia and methane. Astronomers call these compounds ices because they would freeze
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's mass. The second method, which has found most known planets, looks
Article · 3 min read
Planets & the Solar System
Mars
red point, and the ancients named it for gods of war and blood. Through telescopes it showed polar caps that grew and shrank with the seasons and dark markings that some astronomers
Article · 4 min read
