every single one.
You can see some of the planets with the naked eye. The following can be seen easily; they appear as bright stars: Mercury, Venus, Mars, Jupiter, Saturn. To see other planets, telescopes are required.
Planets, moons, asteroids, artificial satellites.
Astronomers use telescopes to study stars and planets by capturing light from these celestial objects and analyzing it. They can gather data on the properties of stars and planets, such as their temperature, composition, and distance from Earth, to deepen our understanding of the universe. Telescopes come in various forms, such as optical telescopes, radio telescopes, and space telescopes like the Hubble Space Telescope.
Their eyes, ground-based telescopes, space telescopes.
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Telescopes are instruments used by astronomers. The first person to do this was Galileo.
Only Uranus and Neptune were not known to the Sumerians, and required telescopes in order to be discovered.
Astronomers cannot locate extrasolar planets with telescopes because these planets are outside of our solar system and too far away for telescopes to directly observe. Instead, astronomers use indirect methods such as radial velocity and transit techniques to detect these distant planets.
Telescopes can be used.
they are bought into space for the stars and planets
The photosphere can be seen with visible-light telescopes, while the chromosphere is most easily observed with ultraviolet telescopes and the corona with X-ray telescopes.
The discovery of additional planets was made possible by advancements in telescope technology, particularly the development of large ground-based telescopes and space telescopes like the Hubble Space Telescope. These telescopes allowed astronomers to observe distant planets more effectively and detect previously unknown planets orbiting other stars.