Nature Astronomy, Published online: 15 February 2024; doi:10.1038/s41550-024-02215-w The persistent ring of M87* confirms predictions ————— Free Secure Email – Transcom Sigma Transcom Hosting Transcom Premium Domains

Nature Astronomy, Published online: 15 February 2024; doi:10.1038/s41550-024-02204-z In October 2023, astronomers, planetary scientists and biologists gathered in Kyiv for Ukraine’s first international astrobiology meeting, advancing science and crossing disciplinary borders in wartime. ————— Free Secure Email – Transcom Sigma

Nature Astronomy, Published online: 15 February 2024; doi:10.1038/s41550-024-02194-y A dynamo mechanism similar to that in the Sun can produce the large-scale magnetic field that is needed to drive the relativistic outflows (and short gamma-ray burst) from binary neutron star mergers,

Nature Astronomy, Published online: 12 February 2024; doi:10.1038/s41550-023-02191-7 The Eridania region of Mars bears various topographic and geomorphologic signatures of extensive volcanotectonic episodes and diverse volcanism that happened 3.5–4 billion years ago, indicative of vertical crustal recycling similar to Archaean

Nature Astronomy, Published online: 09 February 2024; doi:10.1038/s41550-023-02184-6 The observed ‘radius valley’ — a dip in the distribution of exoplanet radii, which separates rocky super-Earths from larger sub-Neptunes — is at odds with current theories of planetary formation. New simulations

Nature Astronomy, Published online: 09 February 2024; doi:10.1038/s41550-024-02214-x Black hole Sun ————— Free Secure Email – Transcom Sigma Transcom Hosting Transcom Premium Domains