Galaxies

Not All Star-forming Clouds Are The Same

Astronomers have created the first high-resolution maps of the big, dense gas clouds that form stars within galaxies.

An explosive outflow of molecular gas within the Orion Nebula

Stellar Science

A Map of a Stellar Explosion

Scientists may have discovered a clue to how massive stars form in the Orion Nebula and a stellar birthplace.

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.

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.

The cluster environment strips gas from galaxies

Galaxies

Putting the Brakes on the Stellar Baby Boom

Two studies of distant galaxy clusters point to different mechanisms of stopping the baby boom that reigned in the early universe.

Stellar Science

ALMA Captures Star Formation in Action

New ALMA observations reveal a forming star as it launches a wind from the edge of the disk that feeds it.

ALMA image of Hubble Ultra Deep Field

Galaxies

ALMA Pans for Galactic Gold in the Hubble Ultra Deep Field

ALMA, the largest telescope array in the world, took a look at the Hubble Ultra Deep Field, and revealed the cosmic history of star formation.

A Gravitationally Unstable Circumstellar Disk (Model)

Stellar Science

Stars Form in Turbulent Times

New images of four circumstellar disks suggest that the star formation process is much more violent than previously thought.

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