Baryon Acoustic Oscillations

In 2018, astronomers observed that the corona of 1ES 1927+654, an actively accreting, 1.4-million-solar-mass black hole located in a galaxy around 270 million light-years away, suddenly disappeared, before reassembling months later.

Scientists using the Dark Energy Spectroscopic Instrument have unveiled the largest 3D map of the universe ever. The results suggest that dark energy, the mysterious force pulling the universe apart, may be weakening, challenging prevailing theories of cosmology.

To study dark energy's effects over the past 11 billion years, the Dark Energy Spectroscopic Instrument (DESI) has created the largest 3D map of our cosmos ever constructed, with the most precise measurements to date.

The magnetic field lines of our galaxy's central black hole are answering some questions about black hole structure.

The current theoretical model for the composition of the universe is that it's made of 'normal matter,' 'dark energy' and 'dark matter.' A new study challenges this. A University of Ottawa study published in The Astrophysical Journal challenges the current model of the universe by showing that, i

This enormous structure could help explain processes close to the dawn of time—or it could be a random cosmic fluke

An immense bubble of galaxies, one billion light years wide and located 820 million light-years away, could be fossilized remains of the Big Bang.

Our best understanding of the universe is rooted in a cosmological model known as LCDM. The CDM stands for cold dark matter, where most of the matter in the universe isn't stars and planets, but a strange form of matter that is dark and nearly invisible. The L, or lambda, represents dark energy. It is the symbol used in the equations of general relativity to describe the Hubble parameter, or the rate of cosmic…

New research has improved the accuracy of the parameters governing the expansion of the universe. More accurate parameters will help astronomers determine how the universe grew to its current state and how it will evolve in the future.

Data from the CHIME radio observatory are a milestone in the quest to discover the hidden origins of universal structure

A new map of cosmic expansion suggests that dark energy evolves over time, hinting that the universe doesn't work the way we thought it did

And it could get explosive.

Dark energy's grip on the cosmos could be more fickle than scientists once believed.

The different ways red giants "sing" could affect distance measurements of the universe, potentially helping soothe a cosmic headache: The Hubble tension.

The cosmic distance ladder could soon have another rung.

Astronomers have spotted a gigantic void they believe to be a baryon acoustic oscillation — a relic from when the universe was a fiery plasma soup

Astronomers have discovered the first "bubble of galaxies," an almost unimaginably huge cosmic structure thought to be a fossilized remnant from just after the Big Bang sitting in our galactic backyard.

Astronomers from the University of Hawaiʻi have unexpectedly discovered an immense bubble of galaxies, named "Hoʻoleilana," thought to be a fossil-like remnant from the birth of the universe.

The bubble is 10,000 times wider than the Milky Way and located 820 million light-years from our own galaxy.

Named Ho'oleilana, the newly-discovered 'bubble' of galaxies is around one billion light-years across and is centered 820 million light-years away from the Milky Way.