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Nereid

All articles tagged with #nereid

space2 months ago•5 min saved

Nereid May Be Neptune's Last Survivor From a Violent Moonpocalypse

A Science Advances study suggests Neptune’s largest moon Triton captured into the planet’s system and wiped out the original moon family, leaving Nereid as a possible native survivor with a highly elongated orbit. JWST infrared data imply Nereid is more like an icy native moon than a captured Kuiper Belt Object, challenging its status as a former KBO. REBOUND simulations show that in about 20% of runs, Triton can eject an inner moon into a long, tilted orbit similar to Nereid’s, implying Nereid could be a frozen relic of Neptune’s violent moon history; confirmation would require a future spacecraft visit.

via sciencealert.com|

#moon #neptune #nereid

space3 months ago•2 min saved

Nereid: Neptune’s Last Moon After Triton’s Ancient Arrival

Using Webb telescope data and simulations, scientists propose that Neptune’s moon Nereid is the sole survivor of an ancient, Triton-triggered disruption of Neptune’s original moon system; Triton’s capture likely destroyed the other moons, while Nereid was hurled outward into a highly eccentric, distant orbit. Its water-rich surface and Uranian-like signature support its status as the last remnant of Neptune’s early lunar family.

via Gizmodo|

#neptune #nereid #solar-system-history

space3 months ago•59 min saved

JWST finds Neptune’s Nereid may be the solar system’s oldest moon survivor

New James Webb Space Telescope analysis suggests Neptune’s third-largest moon, Nereid, is likely the last remaining remnant from Neptune’s original moon system rather to a captured Kuiper Belt object, with a water-ice-rich spectrum and an unusual orbit that imply Triton’s capture disrupted Neptune’s moons and that Nereid could offer a rare window into how moons around ice giants form.

via Live Science|

#james-webb-space-telescope #moon-formation #neptune

space3 months ago•186 min saved

Nereid: Neptune’s lone survivor of an ancient moon collision

New James Webb Space Telescope data suggest Neptune’s moon Nereid may be the sole survivor of an ancient collision that destroyed Neptune’s original moon system. Its surface appears highly water-rich and CO2-bearing, unlike many Kuiper Belt objects, challenging a captured-origin scenario. Computer simulations indicate Triton’s arrival over 4 billion years ago would have disrupted the system, but Nereid could have endured on a distant, eccentric orbit, potentially rewriting ideas about how moons around ice giants form.

via CNN|

#james-webb-space-telescope #moon #neptune

science3 months ago•14 min saved

Nereid Could Be Neptune’s First Moon, Study Finds

A new study suggests Neptune's enigmatic moon Nereid may be a primordial satellite that formed with Neptune, rather than a captured body, shedding light on the planet’s early history.

via AP News|

#astronomy #moon #neptune

science-space3 months ago•186 min saved

Nereid: Neptune’s lone survivor of an ancient moon-wide chaos

JWST data suggest Neptune’s moon Nereid may be the only intact remnant of Neptune’s primordial moon system, surviving the disruptive arrival of Triton over 4 billion years ago. Its surface composition is more like regular satellites than Kuiper Belt objects, challenging the idea that it was captured. Computer simulations indicate a roughly 25% chance that some moons could survive the Triton encounter, and further JWST observations or a future Neptune mission could confirm this scenario.

via CNN|

#james-webb-space-telescope #neptune #nereid