Observing a star carefully enough to notice that it is experiencing a gravitational tug caused by an unseen planet.
Another possibility: The "transit " method was used very effectively in the Kepler space mission. I think that may be the main method to date.
About 100 extrasolar planets are thought to have been discovered. All are giants and probably most resemble Jupiter
The reason that most extrasolar planets are found close to their parent stars is that the amount and frequency of the star's motion are both higher in these planets.
Most exoplanets so far discovered resemble Jupiter. However, Earth sized planets have also been discovered and more will be discovered.
Of what we have found most are the size of Jupiter or larger. But we know many more extrasolar planets exist that we simply cannot detect. If we were to draw hypotheses on what planets are most abundant they would either be similar to dwarf planets. Or, if the reader does not view dwarf planets as true planets then planets the size of ones in the terrestrial zone like: Mercury, Venus, or Earth. Are probably the most abundant.
the amount and frequency of the star's motion are both higher.
About 100 extrasolar planets are thought to have been discovered. All are giants and probably most resemble Jupiter
The reason that most extrasolar planets are found close to their parent stars is that the amount and frequency of the star's motion are both higher in these planets.
Most exoplanets so far discovered resemble Jupiter. However, Earth sized planets have also been discovered and more will be discovered.
Of what we have found most are the size of Jupiter or larger. But we know many more extrasolar planets exist that we simply cannot detect. If we were to draw hypotheses on what planets are most abundant they would either be similar to dwarf planets. Or, if the reader does not view dwarf planets as true planets then planets the size of ones in the terrestrial zone like: Mercury, Venus, or Earth. Are probably the most abundant.
the amount and frequency of the star's motion are both higher.
So far. Jupiter and Saturn
Most of the known extrasolar planets are more massive than Earth because massive planets are easier to detect. We have detected planets smaller than Earth.
Uranus
Current detection methods are only capable of detecting planets which are close to their parent star. This may not be a trend, only statistically biased.
Jupiter NeptuneThe planet that most extrasolar planets resembles Jupiter.Jupiter(apex)Most of the confirmed Exoplanets are larger gaseous planets with large masses. These are easier to detect and confirm due to their size. They most resemble Jupiter, although many are thought to be much larger than our largest planet.
Jupiter NeptuneThe planet that most extrasolar planets resembles Jupiter.Jupiter(apex)Most of the confirmed Exoplanets are larger gaseous planets with large masses. These are easier to detect and confirm due to their size. They most resemble Jupiter, although many are thought to be much larger than our largest planet.
They least resemble rocky planets like Venus Earth and Mars, particularly they least resemble planets that we would consider as possible life sustaining planets.