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.

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.

ALPINE galaxies

Exoplanets

60-second Astro News: Mature Infant Galaxies & A Possibly Rogue Planet

This week in astronomy news: Distant galaxies that look older than they are and a terrestrial planet that might be drifting through our galaxy.

Gamma-ray map of sky

Cosmology

Starlight Tally Reveals Cosmic History of Star Formation

Nearly 11 billion years ago, the universe churned out stars at a rate 10 times greater than today. And yet all the starlight in the cosmos appears no brighter on the sky than a 60-watt light bulb seen from miles away.

Galaxies

About Those 2 Trillion New Galaxies . . .

The news that astronomers find the universe has 10 times more galaxies than previously thought? There's less to this than the headlines say.

Planck_polarization_image_of_BICEP2_field

Astronomy Questions & Answers

The Kavli Foundation Q&A: What Has Planck Taught Us About the Early Universe?

Scientist George Efstathiou weighs in on the latest results from the Planck satellite and what they say about cosmic inflation, the first stars, and more.

Galaxies

Question Reopened: How do Galaxies Grow?

Evidence from observations sheds doubt on cosmic cannibalism as a source for galaxy growth, suggesting that instead galaxies grow by pulling in gas from the intergalactic medium.

Illustris simulation's view of the universe

Cosmology

Best Model Yet for Cosmic Evolution

Astronomers have created the most realistic computer simulation of the universe’s evolution to date, tracking activity across 13 billion years of cosmic history.

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