ESO/NASA, ESA and the Hubble Heritage Team (STScI/AURA)/F. Vogt et al.

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This month we look at other ocean worlds within our Solar System, compact objects (including a neutron star lurking in a supernova remnant; pictured) and the shapes of galaxies...

Latest Research

  • Letter |

    A bright X-ray outburst from a massive star cluster 12.5 kpc from a galactic centre fits the profile of a tidal disruption event (TDE), indicating the likely presence of an intermediate-mass black hole (IMBH). TDEs could be the most effective way of identifying IMBHs.

    • Dacheng Lin
    • , Jay Strader
    • , Eleazar R. Carrasco
    • , Dany Page
    • , Aaron J. Romanowsky
    • , Jeroen Homan
    • , Jimmy A. Irwin
    • , Ronald A. Remillard
    • , Olivier Godet
    • , Natalie A. Webb
    • , Holger Baumgardt
    • , Rudy Wijnands
    • , Didier Barret
    • , Pierre-Alain Duc
    • , Jean P. Brodie
    •  & Stephen D. J. Gwyn
  • Letter |

    By studying the properties of almost 200 disk galaxies, it is shown that modified Newtonian dynamics (MOND), or MOND-like alternative theories of gravity based on the existence of a fundamental acceleration scale, are ruled out as fundamental theories for galaxies at more than 10σ.

    • Davi C. Rodrigues
    • , Valerio Marra
    • , Antonino del Popolo
    •  & Zahra Davari
  • Letter |

    The presence of nanodiamonds in protoplanetary disks correlates strongly with the detection of anomalous microwave emission from the same disks, implying that spinning nanodiamonds rather than polycyclic aromatic hydrocarbons are the source of this puzzling ~30 GHz emission feature.

    • J. S. Greaves
    • , A. M. M. Scaife
    • , D. T. Frayer
    • , D. A. Green
    • , B. S. Mason
    •  & A. M. S. Smith
  • Letter |

    The Waves instrument on board the Juno spacecraft has detected ~1,600 lightning strokes in roughly 1 year of close approaches to Jupiter, indicated by low-dispersion rapid whistlers much shorter than those detected by Voyager 1 in Io’s plasma torus.

    • Ivana Kolmašová
    • , Masafumi Imai
    • , Ondřej Santolík
    • , William S. Kurth
    • , George B. Hospodarsky
    • , Donald A. Gurnett
    • , John E. P. Connerney
    •  & Scott J. Bolton
  • Review Article |

    A review of the various techniques to obtain photometric redshifts, from template-fitting to machine learning and hybrid schemes, and a description of the latest results on extragalactic samples and how survey strategy choices impact redshift accuracy.

    • Mara Salvato
    • , Olivier Ilbert
    •  & Ben Hoyle
  • Letter |

    Cassini magnetic field and plasma observations find evidence of magnetic reconnection on the dayside of Saturn’s magnetosphere, which can explain local auroral pulsations and play a role in the transport of energetic particles within rapidly rotating magnetospheres.

    • R. L. Guo
    • , Z. H. Yao
    • , Y. Wei
    • , L. C. Ray
    • , I. J. Rae
    • , C. S. Arridge
    • , A. J. Coates
    • , P. A. Delamere
    • , N. Sergis
    • , P. Kollmann
    • , D. Grodent
    • , W. R. Dunn
    • , J. H. Waite
    • , J. L. Burch
    • , Z. Y. Pu
    • , B. Palmaerts
    •  & M. K. Dougherty

News & Comment

  • News & Views |

    The Juno spacecraft has detected unprecedented numbers of ‘whistlers’ and ‘sferics’ in its orbits around Jupiter, both indications of high lightning flash rates in the atmosphere of the gas giant planet.

    • Jacob Bortnik
  • Mission Control |

    The Hayabusa2 spacecraft will soon rendezvous with asteroid Ryugu in order to study its composition using remote sensing, a lander, rovers and sample return, explains Elizabeth Tasker.

    • Elizabeth Tasker

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