Galactic centers grow together - High-resolution simulations of barred galaxies show nuclear star clusters and nuclear stellar discs likely form and grow together, reshaping our picture of how galactic centers evolve over billions of years and offering fresh insight into the core of the Milky Way. Keywords: galactic center, nuclear star cluster, nuclear stellar disc, barred galaxy simulation.[15]
Stellar stream maps dark matter - A newly analyzed stream of stars extending more than 3,000 light-years from a globular cluster appears to have been sculpted by dark matter in a distant galaxy, giving astronomers a promising new tracer for mapping the invisible matter that dominates the universe. Keywords: stellar stream, globular cluster, dark matter, galactic halo.[3]
Compact red galaxies discovered - Fresh research suggests that the mysterious little red dots seen in deep sky surveys are actually tiny but extremely dense galaxies with masses roughly a billion times that of the Sun, potentially changing how we count and characterize small galaxies in the early universe. Keywords: little red dots, compact galaxies, Nature Astronomy, early universe.[8]
New limits on dark energy - New theoretical work sets observational limits on possible phase transitions in the dark energy era, narrowing down how dark energy can evolve over cosmic time and helping theorists rule out more exotic models of the universe’s accelerated expansion. Keywords: dark energy, phase transitions, cosmic acceleration, cosmology constraints.[8]
JWST images Lion's Head Nebula - A new James Webb Space Telescope image of the Lion's Head Nebula, also known as NGC 2392, reveals intricate gas and dust structures around a dying star that could resemble the distant future of our own Sun, highlighting JWST’s ability to resolve the fine details of stellar end-of-life stages. Keywords: JWST, Lion's Head Nebula, NGC 2392, planetary nebula.[5]
Earth's shadow and lunar eclipse - A recent visualization of Earth’s shadow built from multiple lunar eclipse images comes just days before a deep partial lunar eclipse, offering a striking reminder of how the Moon moves through our planet’s umbra and what skywatchers in the Americas, Europe, and Africa can expect to see later this week. Keywords: Earth’s shadow, lunar eclipse, umbra, skywatching.[17][1]
Starlink's 100th Falcon 9 launch - SpaceX is preparing to launch another batch of Starlink satellites from Vandenberg on a mission that marks the company’s 100th Falcon 9 flight of 2026, underscoring how routine orbital launches are becoming while still reshaping global internet infrastructure from low Earth orbit. Keywords: Starlink, Falcon 9, Vandenberg launch, commercial spaceflight cadence.[13]
Artemis II rehearsal an
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