Astronomers have recently detected a rogue planet that is growing at an unprecedented rate of six billion tons per second. This planet, located in the Milky Way galaxy, is gaining mass at such a high speed due to its close proximity to a star. It is absorbing the star’s outer layers and using the matter to enlarge itself. The study was conducted by a team of international astronomers using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and the Zwicky Transient Facility (ZTF) at the Palomar Observatory in California.
The rogue planet, named as WD 1856 b, is a gas giant about the size of Jupiter. It is located 80 light-years away from Earth and orbits a white dwarf star, WD 1856+534. This star is a dense, dying star that has exhausted its nuclear fuel. The planet orbits the star in a very tight orbit with a period of just 1.4 days, which explains its rapid absorption of the star’s mass.
The phenomenon known as “mass transfer” is responsible for this unusual growth. The planet’s gravitational pull is stripping away the outer layers of the star, absorbing this mass and causing it to grow. This process is often seen in binary star systems, but it is the first time it has been observed in a planet-star system.
The mass transfer rate of six billion tons per second is the highest ever recorded for a planet. The researchers estimate that the planet could have gained as much as 4% of its mass over the course of its lifetime due to this process. This discovery challenges the previous theories about planet formation and evolution, as it suggests that planets can grow and change after their formation.
This rogue planet was initially discovered in 2020, but the new findings about its growth rate were only recently published in the journal Nature. The study also suggests that this kind of mass transfer could lead to the formation of hot Jupiter planets, which are gas giants that orbit very close to their stars. The researchers believe that WD 1856 b could be a precursor to a hot Jupiter.
This discovery opens up new avenues for research in astronomy and could help scientists better understand the evolution of planetary systems. The study also highlights the importance of continuous observation of celestial bodies to track their changes and growth over time.
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