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2 clusters · 6 sources · 3 days · First seen 5 days ago · Last updated 2 days ago

Discovery of exoplanet GJ 3090 b retrograde orbit

Overview

Astronomers led by the University of Geneva have identified an unusual exoplanet, GJ 3090 b, which possesses a retrograde orbit. Located approximately 54 to 73 light-years from Earth in the Virgo constellation, the sub-Neptune planet orbits its red dwarf host star in a direction largely opposite to the star’s rotation.

Using the NIRPS spectrograph at the La Silla Observatory, researchers measured a three-dimensional spin-orbit angle of approximately 136 degrees. This discovery marks the first known retrograde planet identified around an M dwarf star. Because no massive nearby objects or stellar companions were found to explain the misalignment, researchers suggest the planet may have formed in a second, backward-rotating disk of gas, a finding that challenges standard theoretical models of planetary formation.

Entities

GJ 3090 b · University of Geneva · Institute of Astrophysics of the Canary Islands · HD 189733 b · Yann Carteret

Claims

What the coverage asserts, and how many sources carry each claim.

[● 2 SOURCES] The measurement of the psi angle provides clues about the formation and evolution of planetary systems. www.ccvalg.pt · www.jutarnji.hr
[● 2 SOURCES] The three-dimensional spin-orbit angle of GJ 3090 b is approximately 136 degrees. www.thebrighterside.news · www.jutarnji.hr
[● 2 SOURCES] The study was conducted using the NIRPS spectrograph at the La Silla Observatory. www.ccvalg.pt · www.jutarnji.hr
[○ 1 SOURCE] The exoplanet GJ 3090 b follows a strongly misaligned retrograde orbit around its red dwarf host star. www.thebrighterside.news
[○ 1 SOURCE] GJ 3090 b has a radius approximately 2.18 times that of Earth. www.thebrighterside.news
[○ 1 SOURCE] The mass of GJ 3090 b is roughly 4.52 times greater than Earth's. www.thebrighterside.news
[○ 1 SOURCE] GJ 3090 b is the first known retrograde planet discovered around an M dwarf star. www.thebrighterside.news
[○ 1 SOURCE] The planet is located approximately 73 light-years away. www.jutarnji.hr

Timeline

2 days ago

[TECHNOLOGY] 4 sources
Exoplanet GJ 3090 b discovered in unusual retrograde orbit
Astronomers have discovered GJ 3090 b, a sub-Neptune exoplanet orbiting its red dwarf star in a retrograde direction, challenging standard planetary formation theories.
5 days ago

[TECHNOLOGY] 2 sources
Exoplanet GJ 3090 b confirmed to have a retrograde orbit
Astronomers have confirmed that exoplanet GJ 3090 b has a retrograde orbit, spinning in the opposite direction of its host star, challenging existing models of planetary formation.

Sources

aeiou.pt · cienciakanija.com · evariste.org · hsbnoticias.com · jutarnji.hr · thebrighterside.news