Doppler spectroscopy is one method ; below are several links to information regarding how new planets are discovered or inferred .
The astronomer Galle, assisted by d'Arrest, discovered Neptune. Credit is also given to Adams and Le Verrier. They were mathematicians who predicted the position of Neptune. Le Verrier persuaded astronomers to search for the new planet.
Pluto is the planet that scientist are saying is not a planet. Scientists are not saying any particular planet is not a planet. Simply that Pluto has been reclassified as a dwarf planet.
light years and then some ;-)
yes there is many stars and they can be discovered
No. Titan is not a planet; it is one of the moons of Saturn. It is not newly discovered either; it was first observed in 1655.
It wasn't discovered to not be a planet, it was decided to no longer be a planet. Recently, the last 2 or 3 years scientist decided (not all) it was not an official planet.
Venus has been known to mankind since ancient times, as this planet is easily discernible in the night sky. Therefore, Venus was not discovered by any scientist.
Titan is not a planet; it is a moon of Saturn. It was discovered by Christiaan Huygens in 1655.
NASA has already discovered a new planet made out of water.
engro
well back of Pluto there is a planet but they are still learning about it.
Mars is considered a potential candidate for human colonization. Scientists are researching ways to make the planet habitable, such as building enclosed habitats and sustainable ecosystems. However, many technological and logistical challenges need to be overcome before humans can establish a permanent presence on Mars.
Entrepreneurship
the teacher who discovered the newest planet was Mrs. Munez living in paknaan new york city
The astronomer Galle, assisted by d'Arrest, discovered Neptune. Credit is also given to Adams and Le Verrier. They were mathematicians who predicted the position of Neptune. Le Verrier persuaded astronomers to search for the new planet.
Entrepreneurship (E)
Ptolemey is a scientist that studied the planets and he discovered new planets in place.