Why is the word TRAPPIST-1 everywhere?
TRAPPIST-1 is a dwarf star in the Aquarius constellation, which is less than 40 light years from Earth.
Seven earth-sized planets that could contain life have been found orbiting it.
Why are there planets on the Google homepage?
Todays’ Google Doodle celebrates NASA’s discovery, with an animation of the planets waving at the telescope.
The planets don’t have names – they’re listed a to h, with ‘a’ referring to the star itself.
What is an exoplanet?
An exoplanet is a star which orbits a planet other than the Sun.
For centuries, scientists, philosophers and science fiction writers have suspected that extrasolar planets existed.
The sixteenth century Italian philosopher Giordano Bruno, who supported the Copernican theory that the Earth and other planets orbit the Sun, said that fixed stars are similar to the Sun – so must be accompanied by planets.
Source: http://metro.co.uk/2017/02/23/what-is-an-exoplanet-how-many-are-there-and-how-were-they-discovered-6467070/
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