Neptune, Uranus, the dwarf planet Pluto, and all the exoplanets. 837 exoplanets had been discovered as at 2012-Sep-07. Mars, Venus, Jupiter, Saturn, Mercury and obviously Earth can be seen with the naked eye. All the rest were discovered by telescope. Seeing as we don't have warp drive, hyper-space or inter-dimensional travel, there is no other way to discover a planet except by observation. This is always done through a telescope, whether it be visible spectrum, IR, UV, radio etc
There is also some discussion that Neptune and Pluto were discovered by noticing the variation in the orbits of other planets. After the maths was done, telescopes were pointed at where we thought the source of the orbital variation would be, and Neptune and Pluto were discovered. So was the time of discovery, when we did the maths or when we first observed them through a telescope ... ?
The surprising thing to me is how MANY extra-solar planets have been discovered. Considering the limitations of the Kepler Space Telescope's design, this indicates that there may be planets around a majority of the stars.
There is a bit of confusion here. Kepler is not the name of a planet but of a space telescope used to discover planets in other solar systems. Planets discovered with this telescope are given designations such as Kepler-22b. This telescope has been used to discovered hundreds of planets.
The Kepler space telescope was launched by NASA in 2009 to search for exoplanets. The telescope discovered thousands of new planets during its mission, which ended in 2018. The discoveries made by the Kepler mission were a collaborative effort involving many scientists and researchers.
Neptune was discovered using a telescope.Uranus was discovered with the naked eye, but because of it's slow rotation it was believed to be a star. Only with a telescope was it identified as a planet.
Yes, Mercury, Venus, Mars, Jupiter and Saturn had been discovered several millennia before the invention of the telescope.
With a telescope....
The new planets are named after the Kepler Space Telescope, which was a NASA mission that searched for exoplanets using the transit method. The telescope discovered thousands of exoplanets during its mission.
The surprising thing to me is how MANY extra-solar planets have been discovered. Considering the limitations of the Kepler Space Telescope's design, this indicates that there may be planets around a majority of the stars.
There is a bit of confusion here. Kepler is not the name of a planet but of a space telescope used to discover planets in other solar systems. Planets discovered with this telescope are given designations such as Kepler-22b. This telescope has been used to discovered hundreds of planets.
Ancient India discovered only 5 planets without a telescope, because they could see the planets with their eyes, just as we can. Those planets are:MercuryVenusMarsJupiterSaturn
Two in our own solar system, and nearly 1,000 in orbit around other stars.
Some sort of telescope was involved in the discovery of ALL known planets - about a thousand, at the time of this writing - with the exception of the five planets that can be seen with the naked eye.
Mars was discovered long before telescopes were invented. It is one of the classical planets, discovered in ancient times.
The Kepler space telescope was launched by NASA in 2009 to search for exoplanets. The telescope discovered thousands of new planets during its mission, which ended in 2018. The discoveries made by the Kepler mission were a collaborative effort involving many scientists and researchers.
yes as you know we use the telescope to see other planets. since we had the telescope, we have discovered five new planets in our solar system which lay beyond pluto
Neptune was discovered using a telescope.Uranus was discovered with the naked eye, but because of it's slow rotation it was believed to be a star. Only with a telescope was it identified as a planet.
Yes, Mercury, Venus, Mars, Jupiter and Saturn had been discovered several millennia before the invention of the telescope.