NASA Researchers Examine Planet With Retrograde Motion

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Astronomers have discovered GJ 3090 b, an exoplanet comparable in size to Neptune, which orbits an M dwarf star in a direction contrary to the star's rotation. Utilizing high-resolution data from the NIRPS near-infrared spectrograph, the team assessed the system's three-dimensional orbital alignment, uncovering an orbital tilt of approximately 136 degrees. This discovery marks the first confirmed retrograde planet around an M dwarf, a type of star prevalent in our galaxy. The research yielded no indications of a significant external companion that could influence such an unusual orbit. Future studies may provide insights into the formation of this distinctive planetary system.  Disclosure: This video contains stock footage and content created or enhanced using Al-assisted tools. ai-generated

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00:00Astronomers have discovered a planet with an unusually backward orbit.

00:04The planet, known as GJ39db, is about the size of Neptune.

00:08It orbits a small, cool star called an M-dwarf.

00:11But unlike most planets, it travels opposite to its star's rotation.

00:16Researchers measured its three-dimensional orbital orientation

00:19using the NIARP's near-infrared spectrograph.

00:22They found an orbital obliquity of approximately 136 degrees.

00:27That makes GJ3090b the first confirmed retrograde planet around an M-dwarf.

00:32Scientists are now investigating how the unusual orbit formed.

00:36One possibility is that the star acquired a second disk of gas and dust.

00:41Planets forming from that differently-oriented material could inherit a backward path.

00:46Researchers also searched for a massive outer planet, or companion star.

00:50But they found no evidence of one capable of explaining the extreme orbit.

00:54Further observations could reveal how GJ3090b acquired its unusual architecture.

01:00The findings may also offer new clues about how planetary systems form and evolve.

01:05Disclosure.

01:05This video contains stock footage and content created or enhanced using AI-assisted tools.

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