Cosmologists have merged the two largest Type Ia supernova collections into a single 2,884 strong sample, and the combined data once again hint that dark energy may be changing over cosmic time rather than holding steady. Elsewhere this week, Hubble and Webb teamed up to catch 27 of the smallest icy bodies ever seen beyond Neptune, spectroscopy of the plasma tail of 3I/ATLAS pointed to an extraordinarily cold birthplace around another star, and JWST set the tightest limit yet on moons orbiting an exoplanet. Four quiet results, four small corrections to the picture.

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A central prediction of Einstein’s theory of general relativity is that black holes are quite simple bodies. Their nature can be fully described by just their mass and their spin-rate.

The Λ-Cold Dark Matter (ΛCDM) model successfully explains many large-scale cosmological phenomena, but the early presence of supermassive black holes (SMBHs) still poses a major challenge.

In addition to electromagnetic radiation, the Sun emits an intense stream of charged particles including protons, electrons and alpha particles.

Organic molecules play a central role in understanding the past habitability of Mars. These are compounds built primarily from carbon that serve as the foundation of life on Earth.

Singularities appear in many theories, as points where physical quantities diverge. In most cases, these are not seen as physically real, but rather a consequence of the mathematical tools we use to describe nature.

Current models of white dwarf evolution suggest that the most massive examples are the consequence of a previous stellar merger.

The space between galaxies in a cluster is not entirely dark. Scattered across these vast regions is a faint, diffuse glow known as intracluster light (ICL).

On November 24th, 2021, NASA launched the Double Asteroid Redirection Test (DART) mission to explore the possibility of altering the orbit of an asteroid, should the need ever arise to prevent a potential impact with Eart

Current planetary formation models propose that as the gas and dust around a young star cools, refractory materials begin to condense.

Our standard model of cosmology, known as ΛCDM, is predicated on the existence of dark matter (DM), introduced to explain a variety of observational discrepancies, such as the unexpectedly fast rotation of galaxies, gravi