Galaxy Research

The SETI Institute is holding a live event with researchers Dr. Lauren Sgro and Dr. Mawson W. Sammons to discuss fast radio bursts, millisecond-long flashes of radio waves. New research suggests these bursts occur more often toward galaxy clusters than expected, and the session explores why that might be the case.

Astronomers have identified a triplet of faint, 'ghostly' galaxies whose properties are being used to narrow down what dark matter might be — and rule out some possibilities. By studying how these dim, dark-matter-dominated systems behave, researchers hope to constrain the particle physics behind the universe's missing mass. The findings are drawing attention among science readers interested in cosmology and the ongoing hunt to explain the invisible matter that outweighs ordinary atoms.

A new astronomy feature explores what scientists are learning about the Sun's local stellar neighborhood, examining nearby stars and the conditions around them. Research summarized under the headline highlights ongoing observations of our corner of the galaxy. The article is drawing attention among space and science audiences interested in the latest solar and stellar research.

An astrophysicist is generating a new batch of Lagrangian tracer simulations of galaxy clusters, using a code written in the Julia programming language to post-process the large volume of outputs from his ENZO magnetohydrodynamic simulations. The new tracers are being added in cells not already covered by existing ones. The update offers a glimpse into computational cosmology methods and Julia's growing use in scientific research.

A new study reports that the gas surrounding Sagittarius A*, the supermassive black hole at the centre of the Milky Way, contains a high abundance of metals. The finding offers clues about star formation and chemical enrichment in the galaxy's core and could shape models of how material behaves in extreme environments near black holes.

Astronomers have identified a trio of faint, 'ghostly' galaxies whose properties suggest new constraints on dark matter. By studying how these dim systems behave, researchers hope to narrow down what dark matter could be — and rule out some proposed candidates. The finding is drawing attention as a potentially significant step in the long-running effort to understand the universe's invisible mass.

Astronomers report that a pair of supermassive black holes could merge in as little as 100 years, an unexpectedly short timescale for such cosmic events. If confirmed, the collision would release enormous gravitational waves and offer a rare chance to study how black holes grow and how galaxies evolve.