August 2023

2023-08-07 11:25:00
Astronomers at NASA and Osaka University in Japan have announced that they have identified the second Earth-sized free planet ever discovered, according to the New York Times. On any host star, unlike normal planets, they are not attached to any star and drift through space. In simpler terms, rogue planets are free-floating planets that are not bound by the star’s gravitational force, like the Earth that is attached to the sun. The newspaper explained that these free planets do not only appear in Amid any cosmic place, it is even possible that they are formed in the same way as other planets, that is, inside the swirling disk of gas and dust surrounding the infant star, but unlike other planets, these free planets are violently expelled from their celestial neighborhoods. The newspaper stated that astronomers have calculated Once upon a time, billions of planets had become anomalous and stray in the Milky Way. Now scientists at NASA and Osaka University in Japan estimate the number of these rogue planets in the trillions. In two research papers that were accepted for publication in the Astronomical Journal, the researchers concluded that these planets are more abundant. six times more than the worlds orbiting their suns, and they identified the second Earth-sized free planet ever discovered, according to the newspaper. The newspaper indicated that the existence of rogue free planets has been known for a long time, but it was not understood by scientists. It was the size of Jupiter, the largest planet in our solar system. But that conclusion was met with much opposition. To better study these rogue planets, NASA’s Goddard Space Flight Center astronomer David Bennett and his team used nine years of data from the fine-lensed observatories of the Astrophysical Telescope at the University of Canterbury at Mount John in New Zealand. According to the newspaper, exoplanets were detected indirectly by measuring how their gravity deflects and amplifies the light from distant stars behind them, an effect known as microlensing. The conclusion that most rogue planets are small makes sense, the paper quoted Dr. Bennett as saying. More than the idea that it is the size of Jupiter, because it is believed that planets become abnormal and stray when two proto-planets collide with each other, and the force of the collision is so strong that it expels the free planet from the star system completely. But planets can only be expelled from their star systems by larger bodies . If most of these free planets are the size of Jupiter, many so-called super-Jupiters must be orbiting host stars, but these are rare. On the other hand, these results indicate that planets with less mass are at risk of expulsion, according to the newspaper. Therefore, Bennett believes that these free planets are dangerous on Earth. He also said that the abundance of free planets in the Milky Way indicates that planet-sized objects colliding with each other during the formation process “may be more common than scientists might think”.
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