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Dwarf galaxy WLM becomes star-forming powerhouse

10 September 2015 Astronomy Now

Nearby dwarf galaxy Wolf—Lundmark—Melotte (WLM) poses an intriguing mystery: How is it able to form brilliant star clusters without the dusty, gas-rich environments found in larger galaxies? The answer, astronomers believe, lies in densely packed and previously unrecognised nuggets of star-forming material sprinkled throughout the galaxy.

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ALMA witnesses assembly of galaxies in early universe

22 July 2015 Astronomy Now

The Atacama Large Millimetre/submillimetre Array (ALMA) has been used to detect the most distant clouds of star-forming gas yet found in normal galaxies in the early universe. The new observations allow astronomers to start to see how the first galaxies were built up and how they cleared the cosmic fog during the era of reionisation.

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ALMA’s detailed view of star formation in the distant universe

8 June 2015 Astronomy Now

The Atacama Large Millimetre/submillimetre Array has produced a spectacularly detailed image of a distant galaxy known as SDP.81 that is being gravitationally lensed. The image shows a magnified view of the galaxy’s star-forming regions, the likes of which have never been seen before at this level of detail in a galaxy so remote.

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Sharp-eyed ALMA spots a flare on famous red giant star

30 May 2015 Astronomy Now

Observations with the Atacama Large Millimetre/submillimetre Array (ALMA) have revealed what seems to be a gigantic flare on the surface of Mira, one of the closest and most famous red giant stars in the sky. Activity like this in red giants — similar to what we see in the Sun — comes as a surprise to astronomers.

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Merging galaxies break radio silence

29 May 2015 Astronomy Now

A large Hubble survey confirms an unambiguous link between the presence of supermassive black holes that power high-speed, radio-signal-emitting jets and the merger history of their host galaxies. The results lend significant weight to the case for jets being the result of merging black holes.

Picture This

A perfect ring

29 April 2015 Keith Cooper

This incredible halo-shaped object is an Einstein Ring, which is an extreme manifestation of Albert Einstein’s General Relativity in action.

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Young star system found to be host to organic molecules

10 April 2015 Kerry Hebden

Scientists using the Atacama Large Millimeter/submillimeter Array have found a complex carbon-based molecule in a protoplanetary disc around a young star – in quantities enough to fill all of Earth’s oceans – hinting that prebiotic chemistry is indeed universal and not limited to our Solar System.