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Several methods are used. In many cases - perhaps most cases - the planets are discovered due to their gravitational effect on the star. That is, the star "wobbles" due to the gravitational pull of nearby planets, especially if the planets are very massive (planets more massive, "heavier" in popular language, than Jupiter, are easiest to detect), and close to the star. In some very specific cases, the planet may go right in front of the star, and make it become slightly dimmer once every orbit.
What else can I help you with?
Where are ExtraSolar planets found?
Extrasolar planets are planets found orbiting stars other then our own.
What other planets have there own planets?
As of now, the only planet known to have its own moon is Earth. Other planets in our solar system have moons but no planets of their own. In our solar system, moons primarily orbit around planets rather than planets orbiting around other planets.
Do outer planets have dwarf planets?
No. Planets do not have dwarf planets. A planet-sized object orbiting a larger planet is a moon. Dwarf planets orbit the sun independent of other objects.
Do astronomers study stars planets and other heavenly bodies true or fake?
Yes, they do.
Did astronomers find a new planet?
Astronomers are constantly finding new planets orbiting stars other than our sun. In 2005 astronomers discovered a new object, later named Eris, which almost become the tenth planet. The discussion of this object resulted in a new definition of a planet which excluded Eris.
What do astronomers think about the possibility of planets orbiting other stars and being detected?
Astronomers believe that planets orbiting other stars, known as exoplanets, are common in the universe. They have been detected using various methods such as the transit method and radial velocity method. The discovery of exoplanets has greatly expanded our understanding of planetary systems beyond our own.
Where are the planets found?
Orbiting stars. We know of eight planets orbiting our Sun, and we know of over 300 planets orbiting other stars.
How many more planets did they discover?
Within our solar system, there are 8 planets, and 4 dwarf planets. There are also over 500 dwarf planets from 2 galaxies that have been discovered orbiting other stars.
Is our sun the only star that has planets orbiting around it?
No. Other stars have been found to have planets orbiting them.
Where are ExtraSolar planets found?
Extrasolar planets are planets found orbiting stars other then our own.
What other planets have there own planets?
As of now, the only planet known to have its own moon is Earth. Other planets in our solar system have moons but no planets of their own. In our solar system, moons primarily orbit around planets rather than planets orbiting around other planets.
Is there life on other planets is there any similar to earth?
Astronomers have found Earth-sized planets in other solar systems.
What is a system of planets and other object orbiting the sun?
The Solar System
Is it true that Kepler's laws holds only for the six planets known in his time?
No. It holds for other planets, and for any other situation where one objects orbits another - for example, moons orbiting planets, stars orbiting a black hole, etc.
Why does earth and all other planets orbit the sun?
Without the planets orbiting the sun all the planets would be cold and dark
Are there any other planets other than the eight major planets of our solar system?
Over 900 planets have been discovered orbiting other stars. These are called exoplanets.
What is a group of stars and the planets and other objects orbiting around it?
Solar system
