Nature Astronomy turns 5!

This month we celebrate our 5th birthday with a showcase of papers (free to access) from the past five years. Read them now.


  • Zwicky 18 is a compact blue dwarf galaxy in Ursa Major

    Dwarf galaxies — galaxies of mass less than roughly a billion solar masses — have emerged as key laboratories for testing a number of open questions in astrophysics. This living Collection brings together a series of short and long articles on the science of dwarf galaxies, their properties and their theoretical modelling and simulations to present the current state of knowledge of the field.

Nature Astronomy is a Transformative Journal; authors can publish using the traditional publishing route OR via immediate gold Open Access.

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  • A 4.8σ exomoon candidate is found around gas giant Kepler-1708 b, which orbits at 1.6 au around its star. It is the only candidate from a dedicated survey that analysed 70 cool giant exoplanets discovered by Kepler. Kepler-1708 b-i has a radius of 2.6 Earth radii and orbits its planet at 12 planetary radii.

    • David Kipping
    • Steve Bryson
    • Alex Teachey
    Article Open Access
  • The episodic but protracted delivery of foundering cold material (diapirs) to the lunar core during the first billion years activated vigorous core convection that generated peaks of high intensity in the magnetic field. This process can explain the magnetic record of lunar rocks.

    • Alexander J. Evans
    • Sonia M. Tikoo
  • The 2,000-au-long streamer of material from binary protostar Z CMa can be explained by the flyby of an object some 4,700 au away, now revealed through high-spatial-resolution ALMA and JVLA observations.

    • Ruobing Dong
    • Hauyu Baobab Liu
    • Motohide Tamura
    • This Perspective discusses massive black holes in dwarf galaxies and presents new insights on the demographics of nearby dwarf galaxies to help constrain the black hole occupation/active fraction as a function of mass and dwarf galaxy type.

      • Amy E. Reines
    • This Review summarizes what is known of the stellar and chemical properties of nearby (<20 Mpc) star-forming dwarf galaxies. These objects resemble the earliest formed galaxies and may thus represent a window on the distant, early Universe.

      • Francesca Annibali
      • Monica Tosi
      Review Article
    • Samples returned from the carbonaceous (C-type) asteroid 162173 Ryugu by the Hayabusa2 mission were preliminarily analysed in a non-destructive manner. Their dark spectral features, small densities and absence of a high-temperature component imply that they are most similar to primitive CI group chondrites, but show some differences to known planetary materials.

      Research Briefing
    • A new model demonstrates how the formation of annular structures in a protoplanetary disk can later produce planetary systems that reproduce both the orbital architecture and meteoritic isotope trends observed in our Solar System.

      • Bradley M. S. Hansen
      News & Views

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