News tagged with galaxy formation

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Reconciling dwarf galaxies with dark matter

Dwarf galaxies are enigmas wrapped in riddles. Although they are the smallest galaxies, they represent some of the biggest mysteries about our universe. While many dwarf galaxies surround our own Milky Way, there seem to ...

dateSep 07, 2016 in Astronomy
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Hubble discovers rare fossil relic of early Milky Way

A fossilised remnant of the early Milky Way harbouring stars of hugely different ages has been revealed by an international team of astronomers. This stellar system resembles a globular cluster, but is like no other cluster ...

dateSep 07, 2016 in Astronomy
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Detailed age map shows how Milky Way came together

Using colors to identify the approximate ages of more than 130,000 stars in the Milky Way's halo, Notre Dame astronomers have produced the clearest picture yet of how the galaxy formed more than 13.5 billion years ago.

dateSep 06, 2016 in Astronomy
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Astronomers uncover hidden stellar birthplace

A team of astronomers from the University of Manchester, the Max Planck Institute for Radio Astronomy and the University of Bonn have uncovered a hidden stellar birthplace in a nearby spiral galaxy, using a telescope in Chile. ...

dateJul 26, 2016 in Astronomy
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Why do some galaxies stop making new stars?

Galaxies are star-making machines, churning out new stars fuelled by cold gas collapsing under the force of gravity. Some galaxies can produce hundreds of new stars in a single year, and individual galaxies can contain many ...

dateJul 13, 2016 in Astronomy
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Study explains why galaxies stop creating stars

Galaxies come in three main shapes - elliptical, spiral (such as the Milky Way) and irregular. They can be massive or small. To add to this mix, galaxies can also be blue or red. Blue galaxies are still actively forming stars. ...

dateJul 08, 2016 in Astronomy
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Minor mergers are major drivers of star formation

Around half of the star formation in the local Universe arises from minor mergers between galaxies, according to data from the Sloan Digital Sky Survey. The patch of sky called Stripe 82 is observed repeatedly to produce ...

dateJun 28, 2016 in Astronomy
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Image: Hubble uncovers a mysterious dwarf galaxy

The drizzle of stars scattered across this image forms a galaxy known as UGC 4879. UGC 4879 is an irregular dwarf galaxy—as the name suggests, galaxies of this type are a little smaller and messier than their cosmic cousins, ...

dateJun 13, 2016 in Astronomy
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