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London: The number of planets detected outside our solar system is expected to reach 4,000.
The large figure shows the remarkable success of searching for these planets with telescopes on Earth or in space over the past quarter century, the BBC reported.
A number that also indicates the extent of the planets, where most stars of the Milky Way host at least one planet in orbit. It was one thing that astronomers could not have predicted 30 years ago.
It should be noted that the Encyclopedia of Planets discovered outside the solar system supervised by the Paris Observatory already includes more than 4000 planets of this type.
"The good news is that we are going to go from a starry sky to a planetary sky, because there are more planets than stars," Dr. Françoise Roque told BBC News. Observatoire de Paris and member of the Scientific Council of the Encyclopédie.
The planetary systems are very diverse in their formation, the planets gravitating around a star, two stars, or the orbit of other planets.
NASA's records of planets detected outside our solar system include 3,926 planets, but NASA's Space Telescope has to add 443 constellations in 2018.
The Kepler Space Telescope discovered 2,423 other candidate planets.
The number of planets detected outside the solar system varies between the French encyclopedia and the NASA archives because of the slight difference between the criteria for acceptance, among other factors, the BBC said.
Mr. Rock pointed out that 4,000 were only a number because the boundaries of the planetary world were not certain, highlighting the difficulty of distinguishing between a star called dwarf planets and giant planets and the International Astronomical Union pygmy dwarf stars into small stars, but some are actually large planets.
The first planets outside our solar system were discovered around a pulsed star, a highly magnetic neutron star, in 1992. They were discovered by Canadian astronomers Del Fryl and Polish Alexander Volchshan.
Elaph prepared this report by acting on BBC News. Original publication on the following link:
https://www.bbc.co.uk/news/science-environment-47681239
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