Tag

Diamond Rain

All articles tagged with #diamond rain

space13 days ago•11 min saved

Diamond-Rain World Around a Pulsar Challenges Planet-Formation Theory

Using the James Webb Space Telescope, astronomers identified PSR J2322-2650b, a Jupiter-mass world orbiting a pulsar. Its atmosphere is unusually rich in helium and carbon, with nitrogen and oxygen largely absent, and its clouds may condense soot into diamond, implying a “diamond rain.” The planet’s nearly pure carbon composition and puzzling formation history defy current models, challenging the line between planet and stellar remnant and prompting new theories about how such worlds form.

via Space Daily|

#carbon-atmosphere #diamond-rain #exoplanet

space1 month ago•12 min saved

Lab Reproduces Neptune’s Diamond Rain in Real Time

Researchers replicated the extreme interior conditions of ice giants on a lab bench by driving a thin plastic sheet with two shockwaves and then using an X-ray laser to image the moment carbon atoms crystallize into a diamond lattice as hydrogen separates. The experiment provides direct evidence for the core chemical step behind the long-standing diamond‑rain idea, though it does not prove Neptune or Uranus actually rain diamonds—the planets’ interiors remain modeled rather than observed. The diamonds formed were nanometer-scale, but if similar processes occur in these planets, sinking diamonds could release heat and subtly affect their internal dynamics.

via Space Daily|

#diamond-rain #high-pressure-physics #lab-experiment

space1 month ago•14 min saved

Lab Reproduces Neptune’s Diamond Rain, Revealing Diamonds Form Deep Inside Ice Giants

Scientists at SLAC used ultrafast laser-driven shocks on a hydrocarbon surrogate to mimic Neptune’s deep-interior pressures and temperatures, triggering carbon to crystallize as nanometer-scale diamonds in a femtosecond window and confirming the long-predicted “diamond rain.” Subsequent work shows these conditions can occur at lower thresholds than first thought, implying diamond rain could occur over a broader region of Neptune’s and Uranus’s interiors, potentially influence magnetic fields, and hint at diamond-rich mantles in many exoplanets.

via Space Daily|

#diamond-rain #exoplanets #high-pressure-physics

science6 months ago•2 min saved

Lemon-Shaped Exoplanets with Unique Atmospheres and Mysteries

An unusual exoplanet called PSR J2322-2650b, located 2,000 light years away and shaped like a lemon due to the intense gravity of its pulsar host, exhibits unique characteristics including a helium-and-carbon atmosphere where rain could turn into diamonds, making it potentially a new type of celestial object.

via Good News Network|

#diamond-rain #exoplanet #lemon-shaped

science2 years ago•2 min saved

"Unexpected Discovery: Diamonds Found in Atmospheres of Multiple Planets"

A new study suggests that diamond rain, formed from carbon linking into crystals on giant icy gas planets like Neptune and Uranus, could be more common throughout the universe than previously thought. The study simulated diamond-forming processes in lab conditions and found that the temperature and pressure thresholds for this kind of diamond formation are lower than scientists had believed. This discovery could have implications for understanding similar processes in exoplanets beyond our Solar System and might help explain mysteries about the magnetic fields of Uranus and Neptune.

via ScienceAlert|

#astrophysics #diamond-rain #neptune

science2 years ago•3 min saved

"Diamond Rain: More Common Across the Universe Than Previously Believed"

Researchers led by Dr. Mungo Frost have discovered that diamond formation on icy planets like Neptune and Uranus occurs at lower pressures and temperatures than previously thought, potentially influencing the formation of the planets' complex magnetic fields. The study, conducted at the European XFEL, used high pressure and temperature to replicate conditions inside icy gas giants, revealing insights into diamond precipitation dynamics. The findings suggest that diamond rain could also occur on smaller gas planets known as "mini-Neptunes," impacting their magnetic field formation.

via Phys.org|

#diamond-rain #formation #ice-planets