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  • In the ever growing hunt for exoplanets, astronomers have recently discovered that one of the oldest stars in the Milky Way actually host the hot, rocky Super Earth when it absolutely should not.


  • This unprecedented discovery might just help us better understand the building blocks of the universe, starting from the very beginning following the Big Bang, scientists suspect that the universe solely consisted of lightweight elements like hydrogen, helium and even traces of lithium, meaning that Onley gashes planets could be formed in the early universe.


  • So it's no surprise that everyone's jaw literally hit the floor when scientists found a 10 billion year old star hosting a rocky planet.


  • The stars known as the creative name T O I 561 and the planet T O I.

    被稱為創意名T O I 561的恆星和行星T O I。

  • 561 b This star Planet pairing is a bit of an anomaly because the two are found in a region of the Milky Way, known as the thick disk.

    561 b 這對恆星行星配對有點異常,因為這兩顆恆星是在銀河系的一個區域,即所謂的厚盤中發現的。

  • With the help of data collected by NASA's Kepler Space Telescope.


  • Astronomers estimate the thick disks to be about 10 billion years old and in order to form a rocky planet, heavier elements like carbon, iron and even magnesium are needed.


  • Heavier elements weren't originally.


  • Thoughts were formed until the first stars did, which is roughly 200 million years after the Big Bang.


  • These metals are formed through fusion reactions in the hearts of stars, then expelled when a star dies in a supernova explosion Once released into the universe, the elements can then continue the great circle of life, at least from a start perspective.


  • All this to say that 10 billion years ago, the heavier elements needed for planet formation weren't really in abundance.


  • This newly found rocky planet also has a density that similar to Earth, which is actually really weird because a planet that old should have a higher density.


  • And to top it off, T O I 561 actually hosts at least two other planets that are gashes instead of rocking.

    而最重要的是,T O I 561其實還寄存著至少兩顆其他星球,是氣勢而不是搖擺。

  • So while scientists are still unsure how the planet form, they're coming to the conclusion that the universe has been building planets almost since it was born.


  • The discovery was a combined effort by NASA's Test mission, an exoplanet hunting telescope that uses the transit method to collect data on planets, and a team of researchers at the W.


  • M.


  • Keck Observatory in Hawaii.


  • They identified the rocky planet as a super earth because it has a mass of more than 1.5 Earths and a radius that's roughly 1.4 times larger.


  • After the exoplanets original discovery by tests, the team that the Keck Observatory was able to measure the planet's mass using a customized instrument that collects information during the transit method.


  • Using the high resolution extra spectrometer or high res, astronomers can measure the wobble in a star using the planet's gravitational pull.


  • The team used this measurement to determine the mass of the planet, which then compared to other known planets, help them.


  • Classified is rocky, but apart from this super Earths mass radius in density, that's really where the close comparisons to Earth end.


  • Because its orbital period is less than 12 hours, it takes longer to cross the United States in a car.


  • This puts the exoplanet literally so close to its host star.


  • That is estimated surface temperature is more than 1226 degrees Celsius, which absolutely scorches any hopes of life.


  • And the interesting thing about this discovery is that we aren't hoping to find living organisms on the exit plane instead of T y 561 b provides a unique opportunity toe.

    而這一發現的有趣之處在於,我們並不希望在出口平面上找到生物體,而不是T y 561 b提供了一個獨特的機會趾。

  • Understand the elements present during the very beginning of the universe, answering questions like, Where did the heavy elements needed to create T O I 561 b come from?

    瞭解宇宙之初存在的元素,回答諸如:創造T O I 561 b所需的重元素從何而來?

  • And what is the origin of the old stars and the galaxy thick disk?


  • This super Earth discovery suggests the possibility of other ancient rocky planets out there in the galaxy and could help scientists and astronomers better understand the building blocks of our universe.


  • If you want to learn more about Tessa's missions to search for exoplanets, check out Marin's video here.


  • Make sure to subscribe to Secret for more planetary discoveries.


  • And thanks so much for watching.


  • I'll see you next time on seeker.


In the ever growing hunt for exoplanets, astronomers have recently discovered that one of the oldest stars in the Milky Way actually host the hot, rocky Super Earth when it absolutely should not.



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這個超大品質的超級地球幾乎和宇宙一樣古老 (This Massive Super Earth Is Almost As Old As the Universe)

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    林宜悉 發佈於 2021 年 02 月 26 日