The skies above ESO’s Paranal Observatory resemble oil on water
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Within reach

16 April 2017 Astronomy Now

The skies above the European Southern Observatory’s Paranal Observatory resemble oil on water, as greens, yellows, and blues blend to create an iridescent skyscape.

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Fireworks left over from stellar explosion in Orion Nebula

12 April 2017 Astronomy Now

Stellar explosions are most often associated with supernovae, the spectacular deaths of stars. But new ALMA observations provide insights into explosions at the other end of the stellar life cycle, star birth. Astronomers captured these dramatic images as they explored the firework-like debris from the birth of a group of massive stars, demonstrating that star formation can be a violent and explosive process too.


Ancient stardust sheds light on the first stars

9 March 2017 Stephen Clark

Astronomers have used ALMA to detect a huge mass of glowing stardust in a galaxy seen when the Universe was only four percent of its present age. This galaxy was observed shortly after its formation and is the most distant galaxy in which dust has been detected.


ALMA starts observing the Sun

17 January 2017 Stephen Clark

New images taken with the Atacama Large Millimeter/submillimeter Array in Chile have revealed otherwise invisible details of our Sun, including a new view of the dark, contorted centre of a sunspot that is nearly twice the diameter of the Earth.


First signs of weird quantum property of empty space?

30 November 2016 Astronomy Now

By studying the polarisation of light emitted from an extraordinarily dense and strongly magnetised neutron star using ESO’s Very Large Telescope, astronomers may have found the first observational indications of a strange quantum effect known as vacuum birefringence, first predicted in the 1930s.


International Astronomical Union formally approves 227 star names

24 November 2016 Astronomy Now

The creation of a specialised IAU Working Group, the Working Group on Star Names (WGSN), was approved by the IAU Executive Committee in May 2016 to formalise star names that have been used colloquially for centuries. WGSN has now established a new catalogue of IAU star names, with the first set of 227 approved names published on the IAU website.


Are all stars created equal?

14 November 2016 Astronomy Now

Astronomers have found the strongest evidence yet that the formation of massive stars follows a path similar to their lower-mass brethren — but on steroids! The new findings show that the episodic explosive outbursts within what are called accretion discs, known to occur during the formation of average mass stars like our Sun, also happen in the formation of much more massive stars.


SPHERE reveals protoplanetary discs being shaped by newborn planets

9 November 2016 Astronomy Now

Three teams of astronomers have made use of SPHERE, an advanced exoplanet-hunting instrument on the Very Large Telescope (VLT) at ESO’s Paranal Observatory, in order to shed light on the enigmatic evolution of fledgling planetary systems. The explosion in the number of known exoplanets in recent years has made the study of them one of the most dynamic fields in modern astronomy.