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Showing 1–10 of 10 results
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  • Two double-sun exoplanets have been discovered by the Kepler spacecraft, establishing a new class of ‘circumbinary’ exoplanets and suggesting that at least several million such systems exist in our Galaxy.

    • William F. Welsh
    • Jerome A. Orosz
    • William J. Borucki
    Research
    Nature
    Volume: 481, P: 475-479

  • Whereas large planets, such as gas giants, are more likely to form around high-metallicity stars, terrestrial-sized planets are found to form around stars with a wide range of metallicities, indicating that they may be widespread in the disk of the Galaxy.

    • Lars A. Buchhave
    • David W. Latham
    • Samuel N. Quinn
    Research
    Nature
    Volume: 486, P: 375-377

  • Observations of the super-massive Neptune-sized transiting planet TOI-1853 b show a mass almost twice that of any other Neptune-sized planet known so far and a bulk density implying that heavy elements dominate its mass.

    • Luca Naponiello
    • Luigi Mancini
    • Tiziano Zingales
    Research
    Nature
    Volume: 622, P: 255-260

  • Models of stellar evolution have difficulty producing black holes in close binaries with masses ten times that of the sun, which is consistent with the fact that the most massive stellar black holes known so far all have masses within one standard deviation of that. This paper report a mass of 15.65 ±1.45 times that of the sun for the black hole in the recently discovered system M 33 X-7, which is located in the nearby galaxy Messier 33.

    • Jerome A. Orosz
    • Jeffrey E. McClintock
    • Tsevi Mazeh
    Research
    Nature
    Volume: 449, P: 872-875

  • Observations of a 3-million-year-old pre-main-sequence star with a misaligned disk reveal a giant orbiting planet; the system is ideal for studying the early formation and migration of planets.

    • Madyson G. Barber
    • Andrew W. Mann
    • Jesus Noel Villaseñor
    Research
    Nature
    Volume: 635, P: 574-577

  • The dayside thermal emission spectrum and brightness temperature map of the ultra-hot Jupiter WASP-18b obtained from the NIRISS instrument on the JWST showed water emission features, an atmosphere consistent with solar metallicity, as well as a steep and symmetrical decrease in temperature towards the nightside.

    • Louis-Philippe Coulombe
    • Björn Benneke
    • Peter J. Wheatley
    ResearchOpen Access
    Nature
    Volume: 620, P: 292-298

  • The authors report on a temperate Earth-sized planet orbiting the cool M6 dwarf LP 791-18 with a radius of 1.03 ± 0.04 R⊕ and an equilibrium temperature of 300–400 K, with the permanent night side plausibly allowing for water condensation.

    • Merrin S. Peterson
    • Björn Benneke
    • Thomas Barclay
    Research
    Nature
    Volume: 617, P: 701-705

  • The Transiting Exoplanet Survey Satellite (TESS) has identified a nearby, bright, quiescent M dwarf star that hosts two sub-Neptune-sized planets and one super-Earth-sized planet. The system is eminently suitable for follow-up studies of transit timing variations, radial velocity measurements and transmission spectroscopy.

    • Maximilian N. Günther
    • Francisco J. Pozuelos
    • Ian A. Waite
    Research
    Nature Astronomy
    Volume: 3, P: 1099-1108