21–40 of 223 results
Dusty starburst galaxy (art)

Cosmology

Too Many Massive Stars in Universe's Youngest Galaxies

A new method of measuring star formation in the earliest galaxies finds that they’re producing more massive stars than expected — a result that could affect our understanding of how galaxies grow their stars.

Earliest star formation in a far-away galaxy

Cosmology

Early Star Formation Presents New Cosmic Mystery

New observations suggest that stars were forming just 250 million years after the Big Bang — a record-breaker that will likely open a new line of cosmological inquiry.

MUSE-Hubble Ultra Deep Field

Cosmology

Hawking Takes on the Infinite Multiverse

Stephen Hawking’s last paper on cosmology, published posthumously, might solve the problem of eternal inflation, a theory that suggests our cosmos is but one in a sea of infinite universes.

First Stars (art)

Cosmology

Primordial Chill Hints at Dark Matter Interactions in Early Universe

A simple experiment has detected a signal from the first stars forming just 180 million years after the Big Bang. The observations have intriguing implications for the nature of dark matter.

Dark matter vs. ordinary matter in IllustrisTNG

Cosmology

Simulating the Universe: The Next Generation

A new suite of cosmological simulations sheds light on the interconnected cosmic processes that shape the universe.

Cosmology

Dark Energy Survey Releases First Three Years of Data

Results from the first data release of the Dark Energy Survey include eleven new stellar streams in the Milky Way galaxy.

Sculptor dwarf galaxy

Cosmology

Stars Map Dark Matter in Dwarf Galaxy

A combo of Hubble and Gaia data reveal the distribution of dark matter in a tiny galaxy by tracking the galaxy’s stars.

cosmic time and quasar

Cosmology

Most Distant Black Hole Yet

Astronomers have discovered a supermassive black hole scarfing down gas just 690 million years after the Big Bang.

five black hole mergers

The Black Hole Files with Camille Carlisle

LIGO Sees Smallest Black Hole Binary Yet

LIGO has detected another black hole merger, raising the tally to five.

Neutron star collision

Stellar Science

Astronomers Catch Gravitational Waves from Colliding Neutron Stars

Spacetime ripples from the neutron star smash-up usher in the age of multi-messenger astronomy.

Cosmology

2017 Nobel Goes to Gravitational Waves

Three American physicists have received the Nobel Prize in physics for their contributions to the discovery of gravitational waves.

Virgo

Black Holes

Fourth Gravitational Wave Event Detected

Teaming up with LIGO, Europe’s Virgo detector has bagged its first gravitational waves. The three-observatory detection enabled scientists to better pinpoint the merging black holes’ location.

cosmic ray air shower

Cosmology

Some Cosmic Rays Come from Outside the Galaxy

Astronomers have detected more extremely energetic cosmic particles coming from one side of the sky than the other.

Cosmology

Featured Image: The Cosmic Velocity Web

Have you ever considered the idea of a cosmic velocity web? Learn more about these intriguing visualizations from the study led by Daniel Pomarède.

Cosmology

Does Dark Energy Change Over Time?

Scientists are considering whether the mysterious “force” accelerating the universe’s expansion changes with time.

Large-scale structure

Cosmology

Does the Milky Way Live in a Void?

A sparse galactic neighborhood could clear up certain problems with our understanding of the universe.

The Milky Way's Gamma-ray excess

Cosmology

The Origin of the Milky Way's Mysterious Gamma Rays

Our galaxy's center region is producing gamma rays, but astronomers are still debating whether pulsars or dark matter are the source. Three recent studies tackle the debate head-on.

Planck Cosmic Microwave Background with Cold Spot inset

Cosmology

Debate on Universe’s Cold Spot Heats Up

A new galaxy survey suggests that a supervoid isn’t responsible for the Cold Spot seen in the cosmic microwave background — the oddity may have a far more ancient origin.

Supernova Einstein Cross

Cosmology

Cosmic Lens Provides Unique View of Supernova

Astronomers have discovered a gravitationally lensed Type Ia supernova that will soon give them a new measure of the universe’s expansion.

Galaxy rotation curves

Cosmology

Less Dark Matter in Young Galaxies?

A new study of six young, star-forming galaxies suggests they have less dark matter than expected. But the results may say more about galaxy evolution than about the nature of dark matter.

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