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Rogue Planets

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Two suns, more worlds: binary stars may birth more planets than single stars
space27 days ago

Two suns, more worlds: binary stars may birth more planets than single stars

New simulations suggest planets may form more easily in the outer parts of circumbinary disks around binary stars, as inner zones near the stars are too chaotic. Beyond a “forbidden zone,” disks can become gravitationally unstable and fragment to form multiple planets—often gas giants—while some worlds may be ejected as rogue planets. The study implies binary-star systems could host many planets, making Tatooine-like worlds less rare, and points to ALMA, JWST, and future telescopes to observe such disks; over 50 circumbinary planets are already known.

via Space|
#binary-stars#exoplanets#planet-formation
Rogue planets' moons may host billions of years of habitability
space2 months ago

Rogue planets' moons may host billions of years of habitability

Astronomers propose that moons orbiting free-floating, starless rogue planets could stay warm enough for liquid water for billions of years thanks to tidal heating and hydrogen-dominated atmospheres that trap heat via collision-induced absorption (CIA). Using radiative-transfer (HELIOS) and chemistry (GGchem) codes, the study shows such exomoons could maintain long-term habitability even without a sun, though the models rely on simplifications (e.g., dry atmospheres, constant gravity) and future work will add clouds and water-vapor effects. This expands the search for life beyond traditional, star‑dependent habitable zones.

via Space|
#exomoons#habitability#hydrogen-atmosphere
James Webb Telescope Unveils Water Ice on Mysterious Runaway Planets
science1 year ago

James Webb Telescope Unveils Water Ice on Mysterious Runaway Planets

The James Webb Space Telescope has discovered mysterious Jupiter-sized binary objects, termed JuMBOs, in the Orion Nebula, which may be the remnants of embryonic stars rather than traditional planets. These JuMBOs, found orbiting each other without a parent star, could have formed from pre-stellar cores stripped by high-energy radiation from nearby massive stars, according to a new study. This theory suggests that the JuMBOs are not failed stars but rather products of a unique formation process, though more data is needed to confirm this hypothesis.

via Livescience.com|
#astronomy#james-webb-space-telescope#jumbos
Vera Rubin Observatory: Unveiling Hidden Interstellar Objects
science1 year ago

Vera Rubin Observatory: Unveiling Hidden Interstellar Objects

A new study explores how our Solar System could capture interstellar objects (ISOs) or rogue planets, potentially altering its dynamics. The research, published in Celestial Mechanics and Dynamical Astronomy, discusses the concept of phase space, which includes weak and permanent capture points where such objects could become gravitationally bound to the Sun. The study suggests that while rogue planets are likely abundant, their capture into stable orbits is complex and influenced by factors like the galaxy's tidal forces. The Vera Rubin Observatory may soon provide more insights into these phenomena.

via ScienceAlert|
#astronomy#interstellar-objects#phase-space
"Rogue Planets Linked to Double Star Systems"
science2 years ago

"Rogue Planets Linked to Double Star Systems"

New research suggests that rogue planets, which wander the Milky Way without a parent star, are often ejected from "twisted Tatooine" binary star systems where the stars and planets are misaligned. This discovery could explain the high number of rogue planets in our galaxy, potentially reaching up to a quadrillion. The study highlights that even small planets can be ejected from these systems, contributing significantly to the population of rogue planets.

via Space.com|
#astronomy#binary-star-systems#exoplanets
Astronomers Discover New Rogue Planets Drifting Alone in Space
science-and-space2 years ago

Astronomers Discover New Rogue Planets Drifting Alone in Space

The European Space Agency's Euclid space telescope has discovered seven new rogue planets, which are starless and drift alone through space. These findings highlight the existence of these dark, lonely worlds, which may be more numerous than stars. The discovery comes less than a year after Euclid's launch, showcasing its advanced capabilities in deep space observation.

via Futurism|
#astronomy#dark-matter#euclid-space-telescope
"Euclid Telescope Unveils More Rogue Planets"
science-and-space2 years ago

"Euclid Telescope Unveils More Rogue Planets"

The Euclid space telescope has discovered seven new rogue planets, adding to the growing evidence that there could be trillions of these starless worlds in the Milky Way. These planets, which exist in perpetual night, may still have the potential to host life. The findings suggest a close connection between star and planet formation, and future missions like NASA's Roman space telescope are expected to uncover even more rogue planets.

via Phys.org|
#astronomy#euclid-telescope#extraterrestrial-life