One of the discoveries that led to the modern view of the Solar System was that the "orbits" of the planets were ellipses.
Ellipses
Johannes Kepler.
Planets found outside our own solar system are called exo-solar planets or exoplanets. These are in orbit around other stars. It's ver difficult to detect them due to the distances involved, but with modern techniques, over 500 have been confirmed.
The orbits of the planets all lie in nearly the same plane for preservation of angular momentum.
Geocentric model that was prevalent in the middle ages said that the Earth was in the center of the solar system (in fact of the universe) and all other planets revolved around it. Modern science says that in the solar system the Sun is at the center and all its planets revolve around it.
Ellipses
Johannes Kepler whose new theory was published in 1609.
It can incorporate new scientific discoveries.
Uranus in 1783, Neptune in 1846.
Johannes Kepler.
The solar system formed from a giant molecular cloud of gas and dust around 4.6 billion years ago. As gravity caused the cloud to collapse, the center formed the Sun and the remaining material coalesced to form planets, asteroids, and comets through a process called accretion. The planets then settled into their current orbits as a result of gravitational interactions and orbital dynamics.
Planets found outside our own solar system are called exo-solar planets or exoplanets. These are in orbit around other stars. It's ver difficult to detect them due to the distances involved, but with modern techniques, over 500 have been confirmed.
The Ptolemaic model placed Earth at the center of the universe, with other celestial bodies orbiting around it, while the modern model places the Sun at the center of the solar system, with planets orbiting around it. The Ptolemaic model also incorporated complex epicycles to explain planetary motions, whereas the modern model explains them through the laws of gravity and elliptical orbits.
The wording of this question needs to be improved to understand what you mean.
No physical theory is completely correct, because measurements always have a built-in error that you hope is small. But Copernicus's theory explaining in detail how the planets move was accurate enough for its time and was only found lacking later when observational techniques became sufficiently refined to show its errors. In modern times we have better theories for planetary orbits but Copernicus's general idea that all the planets orbit round the Sun is now generally accepted since Newton's theoretical discoveries, which were applied to showed that the Sun is far more massive than anything else in the solar system.
The orbits of the planets all lie in nearly the same plane for preservation of angular momentum.
The gas giant planets Uranus and Neptune.