1–20 of 239 results
JWST deep-field image showing many galaxies

Galaxies

Webb Telescope Shatters Distance Records, Challenges Astronomers

Distant galaxies in Webb images suggest we need to rethink star and galaxy evolution in the early universe.

white and gold interior of LUX detector

Cosmology

Dark Matter Remains Elusive – For Now

The first run of a new dark matter experiment turns up nothing — but that still tells us something.

AGN (art)

Galaxies

Hubble Image Reveals Possible Quasar Forerunner

A distant object in a deep Hubble Space Telescope field could be in transition from ordinary galaxy to brilliant beacon of light.

Lensing close-up

Cosmology

Meet Earendel, the Most Distant Star Astronomers Have Observed

The Hubble Space Telescope has revealed a single star whose light has traveled for 12.9 billion years to Earth — the most distant star known.

First Stars (art)

Cosmology

No Signal from Cosmic Dawn

Four years after one experiment found tentative signs of the "cosmic dawn," the era of the first stars, another experiment finds nothing.

Dark matter-less galaxy

Cosmology

How Galaxies Lose Their Dark Matter

A careful study of cosmological simulations shows that dark matter–less galaxies aren't impossible — just really rare.

3D galaxy map

Exoplanets

Astronomy in Pictures: Largest 3D Map of Our Universe and a Stellar Intruder

This week astronomers have announced the completion of the largest 3D map of galaxies across the cosmos, plus exquisite radio observations show what happens when a stellar intruder interrupts planet formation.

Concept of the universe's expansion

Cosmology

No Release for the Hubble Tension

New data and analysis show that a long-standing discrepancy in the measurement of the current expansion rate of the universe is real — even as the reason for it remains a mystery.

Cosmology

Twisters in the Cosmic Web

Astronomers have found that the largest structures in the universe spin, making twister-like strings of galaxies and dark matter in the cosmic web.

Dark Energy Survey

Cosmology

Dark Energy Survey Catalogs 226 Million Galaxies

The latest release from the Dark Energy Survey catalogs millions of galaxies, mapping the history of galaxy clustering across space and time.

Elliptical galaxy NGC 1453

Cosmology

New Studies Agree: The Universe Is Expanding Faster Than Expected

Measurements of elliptical galaxies provide a new way of calculating the current expansion rate of the universe. And the results are adding to a growing controversy.

Protocluster

Cosmology

Astronomers Spot Galaxies Clustering in Early Universe

Astronomers have discovered a cluster of galaxies coming together just 770 million years after the Big Bang.

New Horizons

Galaxies

What New Horizons Found in Deep Space — And Why It Matters

NASA’s mission to the outer solar system has found more light than expected. That could mean more galaxies in the visible universe than we thought— or less, depending on who you talk to.

Timing an array of pulsars

Cosmology

Pulsars Show Hint of Gravitational-wave Background

Duos of supermassive black holes tangoing throughout the universe make their own music, and astronomers may have picked up a hint of the tune.

Dark matter-less galaxy

Galaxies

A Dark Matter-less Galaxy, Explained (Maybe)

An international team of astronomers has explained the lack of dark matter in a distant dwarf galaxy — another galaxy stole it.

ALMA image of Hubble Ultra Deep Field

Cosmology

Astronomers Chart Star Formation History, Glimpse Fate of the Universe

Astronomers have tallied how star-making material evolved over cosmic time — and they've predicted how long stars will keep forming before the universe goes dark.

Dark matter: Theory vs. Observed

Galaxies

Hubble Images Reveal Dark Matter Problem

Astronomers studying Hubble Space Telescope images of massive galaxy clusters have uncovered a potential problem with dark matter.

Gravitational waves from GW190521

Cosmology

Record-breaking Signal Reveals New Population of Black Holes

Gravitational-wave observatories have detected the most massive black hole merger yet, and it's challenging our ideas of black hole formation.

Protoplanetary disk

Cosmology

Hints of Young Solar Systems

By studying the images of small young star systems, astronomers expect to learn more about the formation of our solar system.

KIDS survey

Cosmology

Our Unexpectedly Smooth Universe May Point to New Physics

The latest data release from a survey of 31 million galaxies reveals that our universe is even smoother than we thought it was.

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