News tagged with galaxies

An infrared atlas of interacting galaxies

Most galaxies, including our own Milky Way, have been influenced by an interaction with another galaxy at some time in their past. Interactions between galaxies can trigger an increase in star-formation activity ...

dateFeb 02, 2015 in Astronomy
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Measuring galaxy evolution with globular clusters

Globular clusters are gravitationally bound ensembles of stars, as many as a million stars in some cases, grouped in roughly spherical clusters with diameters as small as only tens of light-years. Globular ...

dateMar 23, 2015 in Astronomy
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Mystery of dwarf galaxy could be ejected black hole

An international team of researchers analyzing decades of observations from many facilities—including the W. M. Keck Observatory on Mauna Kea, the Pan-STARRS1 telescope on Haleakala and NASA's Swift satellite—has ...

dateNov 19, 2014 in Astronomy
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New image brings galaxy diversity to life

A compelling new image from Gemini Observatory peers into the heart of a group of galaxies (VV166) traveling through space together. The variety of galactic forms range from a perfect spiral, to featureless ...

dateJan 06, 2015 in Astronomy
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Two spiral galaxies in the process of merging

At this time of year, there are lots of gatherings often decorated with festive lights. When galaxies get together, there is the chance of a spectacular light show as is the case with NGC 2207 and IC 2163

dateDec 12, 2014 in Astronomy
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Hubble reveals a super-rich galactic neighborhood

(Phys.org) —This new image from the NASA/ESA Hubble Space Telescope shows the super-rich galaxy cluster Abell 1413. Located between the constellations of Leo (The Lion) and Coma Berenices, the cluster is ...

dateNov 19, 2014 in Astronomy
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Ultra-luminous X-ray sources in starburst galaxies

Ultra-luminous X-ray sources (ULXs) are point sources in the sky that are so bright in X-rays that each emits more radiation than a million suns emit at all wavelengths. ULXs are rare. Most galaxies (including ...

dateDec 22, 2014 in Astronomy
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Image: Hubble sweeps a messy star factory

This sprinkle of cosmic glitter is a blue compact dwarf galaxy known as Markarian 209. Galaxies of this type are blue-hued, compact in size, gas-rich, and low in heavy elements. They are often used by astronomers ...

dateDec 22, 2014 in Astronomy
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