Tag

Exoplanets

All articles tagged with #exoplanets

science3 days ago•9 min saved

Astronomers Identify First 'Phoenix Planet' Formed From Dead Star's Ashes

A team led by the University of Warwick has identified a likely second-generation planet orbiting the white dwarf HS 0209+0832. Published in Nature Astronomy, the study suggests this world formed from debris ejected by the star during its dying phase, rather than from the original protoplanetary disk. The discovery, confirmed by Hubble and TESS data, marks the first time such a planet has been found around a white dwarf, challenging the assumption that planetary formation is a one-time event tied to a star's youth.

via NDTV|

#astronomy #exoplanets #hubble-space-telescope

science4 days ago•18 min saved

White Dwarf HS 0209+0832 Accretes 'Second-Generation' Planet Formed from Stellar Ashes

Astronomers have identified a white dwarf, HS 0209+0832, that is accreting material from a 'second-generation' planet. This planet formed not from the original protoplanetary disk, but from the ejected envelope of the star's red giant phase. The composition of the accreted material, rich in s-process elements like niobium and depleted in rock-forming elements, confirms this unique origin.

via The Register|

#astronomy #exoplanets #hubble-space-telescope

science4 days ago•4 min saved

Elias 2-24b Confirmed as Youngest Exoplanet, Challenging Formation Models

Astronomers have confirmed Elias 2-24b as the youngest known exoplanet, with an age under one million years. Located 450 light-years away, this Jupiter-mass planet orbits a young star at 55 astronomical units. Its rapid formation contradicts the core accretion model, which predicts such distant giants take millions of years to develop. The discovery, based on reanalyzed Keck Observatory data, suggests current theories underestimate how quickly planets can form in protoplanetary disks. Future observations with NASA’s Roman Space Telescope may reveal more infant planets.

via wired.com|

#astronomy #exoplanets #keck-observatory

science4 days ago•120 min saved

First 'Second-Generation' Planet Found Orbiting a White Dwarf

Astronomers have identified the first known 'second-generation' planet orbiting a white dwarf, a world formed from the ejected material of a dying star rather than the original protoplanetary disk. The discovery, centered on the white dwarf HS 0209+0832, reveals a gas giant whose atmosphere is being stripped by intense radiation, feeding heavy elements back into the star. This finding challenges previous assumptions about planetary formation around stellar remnants and offers a new method to detect similar systems.

via Space|

#astronomy #exoplanets #nucleosynthesis

astronomy5 days ago•45 min saved

White Dwarf HS 0209+0832 Feeds on Planet Formed from Stellar Ashes

Astronomers have identified a white dwarf, HS 0209+0832, that is accreting material from a 'second-generation' planet. This planet likely formed from the ejected envelope of the star's progenitor after it died, rather than from the original protoplanetary disk. The discovery, published in Nature, marks the first evidence of such post-stellar planetary formation around a white dwarf.

via Nature|

#astronomical-spectroscopy #astronomy #exoplanets

science5 days ago•216 min saved

White Dwarf Feeds on Planet Born from Stellar Ashes

Astronomers have identified a white dwarf star, HS 0209+0832, that is accreting material from a 'second-generation' planet. This planet likely formed from the ejected envelope of the star’s progenitor after it died, rather than from the original protoplanetary disk. The discovery, published in Nature, marks the first evidence of such post-stellar planetary formation around a white dwarf.

via CNN|

#astronomy #exoplanets #nucleosynthesis

science6 days ago•222 min saved

Astronomers Confirm First Direct Radio Signal from Exoplanet Beta Pictoris b

Researchers from the Center for Astrophysics | Harvard & Smithsonian and the University of Oregon have reported the first direct detection of radio emission from an exoplanet, Beta Pictoris b. Located approximately 63 to 64 light-years from Earth, this gas giant exhibits auroral radio bursts similar to those seen on Earth and Jupiter. The discovery, which was submitted to arXiv on September 15, 2026, indicates a magnetic field strength of at least 1,250 gauss, significantly stronger than Earth's 0.5 gauss. While the signal is not evidence of intelligent life, it provides the first direct measurement of an exoplanet's magnetic field and offers new insights into planetary atmospheres and habitability.

via Ground News|

#astronomy #exoplanets #magnetic-fields

science7 days ago•9 min saved

Astronomers Reconstruct Exoplanet Orbits Using Decades of Telescope Data

Astronomer Jason Wang has created visualizations of exoplanet orbits by compiling images taken over 12 to 17 years. Using motion interpolation, a technique common in video editing, he reconstructs the slow, predictable movements of these distant worlds based on Kepler’s laws. This method allows for the direct visualization of exoplanets, a feat previously thought impossible without continuous nightly observation. The work has contributed to scientific papers and highlights the patience required for long-term astronomical imaging.

via Hackaday|

#astronomy #exoplanets #keck-observatory

science7 days ago•2 min saved

Roman Telescope Achieves 22-Year Fuel Margin and First Coronagraph Images

NASA’s Nancy Grace Roman Space Telescope has successfully passed critical stability tests and captured its first cosmic images, while a lighter-than-planned build has extended its operational life to 22 years, double the original estimate.

via ScienceDaily|

#coronagraph #exoplanets #nasa

science7 days ago•1 min saved

MeerKAT Telescope Confirms First Direct Radio Detection from Exoplanet Beta Pictoris b

Astronomers have confirmed the first direct radio signal detection from an exoplanet, Beta Pictoris b. Using South Africa’s MeerKAT array, researchers identified auroral emissions indicating a magnetic field over 1,000 times stronger than Earth’s. This discovery provides a new method to measure planetary magnetism and assess habitability, distinct from signals attributed to intelligent life.

via bgr.com|

#astronomy #exoplanets #magnetic-fields

science8 days ago•215 min saved

MeerKAT Telescope Captures First Confirmed Radio Signal from Exoplanet Beta Pictoris b

Astronomers have detected the first unambiguous radio emission from an exoplanet, Beta Pictoris b, located 63 light-years away. The signal, captured by South Africa's MeerKAT telescope, indicates a massive magnetic field and auroral activity, marking a milestone in directly characterizing planetary magnetism outside our solar system.

via CNN|

#astronomy #exoplanets #magnetic-fields

astronomy8 days ago

MeerKAT Telescope Confirms First Direct Radio Emissions from Exoplanet Beta Pictoris b

An international team using South Africa’s MeerKAT radio telescope array has detected variable radio bursts originating directly from Beta Pictoris b, a gas giant located 63 light-years from Earth. This marks the first confirmed instance of radio signals attributed to a single exoplanet rather than its entire star system. The discovery, which is not evidence of extraterrestrial life, allows scientists to study the magnetic fields of Jupiter-like planets, a factor critical for protecting atmospheres and assessing habitability.

via BBC Sky at Night Magazine|

#astronomy #beta-pictoris-b #exoplanets

science10 days ago•3 min saved

Pulsation Timing Hints at Giant Planet in Habitable Zone of Hottest Known Star

Astronomers have identified a potential gas giant, HD 156295 b, orbiting in the habitable zone of the hottest known star, HD 156295. Located 140 light-years away, the star is an A-type Delta Scuti variable with a surface temperature of 13,500 degrees Fahrenheit. The candidate planet, roughly six times the mass of Jupiter, orbits at 3.9 astronomical units with a period of 2,200 days. While the discovery is tentative with a 50% probability of being real, it represents the first potential habitable-zone planet around such a massive, hot star.

via ScienceAlert|

#a-type-stars #astronomy #exoplanets

science10 days ago•0 min saved

Pulsation Timing Hints at Giant Planet in Habitable Zone of Hottest Known Star

via New York Post|

#astronomy #astrophysics #exoplanets

astronomy10 days ago•119 min saved

ALMA Captures First Direct Evidence of Gas Swirls Around Forming Twin Planets

Astronomers have produced the clearest image yet of two forming planets interacting with their birth disk. Using the Atacama Large Millimeter/submillimeter Array (ALMA), researchers observed the WISPIT 2 system, located 430 light-years away. The data reveals how the twin planets, WISPIT 2b and 2c, carve gaps and cavities in the surrounding gas and dust. This marks the first time gas velocity distortions, or 'spiral wakes,' have been directly linked to a confirmed planet, providing a crucial calibration point for future exoplanet detection.

via Space|

#alma #astronomy #exoplanets