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Their eyes, ground-based telescopes, space telescopes.
well they use the telescopes so they can look in space some telescopes have helped people discover new planets
telescopes because they are meant to look into space
they use space probes,satellites,and of coarse,telescopes.
. X-Ray telescopes . Thermal Telescopes . Space Probes Im doing this in school now, and im only 14 so i ain't that intelegent but hope this helps
Optical and Radio telescopes.
We use telescopes or satellites
you look in the sky or use telescopes
They need to look at the stars
Telescopes, probes, and basically anything else someone would use to study outer space.
reflecting and refracting telescopes
Because planets look small from Earth and you cant see the color of the planet