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Transcript of SETH
Galaxy: Grouping of stars and planets held together by gravity.
Planet: A round object that orbits a star and does not create its own light.
Star: A bright celestial object that gives off light by energy produced in its core.
Red Dwarf Stars
By Tyler McCollum
Gliese 581 is a red dwarf star one-third the size of our sun. Circling around Gliese 581 are four planets named b,c,d and e. Planet d could have water and even life. But because red dwarfs radiate infrared light,planet d would look dark to us.
What are red dwarf stars?
Red dwarf stars are made up like all other stars of dust and gas together. But these stars live for trillions of years, which is even longer than the universe has lived.
Could we live on planets circling red dwarf stars?
Red dwarf stars are smaller and cooler than our Sun. Life could exist on some planets circling around these stars, but these planets are mostly made up of large seas and little land.
How many red dwarf stars are there?
Universe: Everything there is.
Infrared: Invisible radiation wavelengths of light.
Will astronomers soon discover an earth-like planet circling a red dwarf star? To be continued...