ESO is the foremost intergovernmental astronomy organisation in Europe and the world's most productive astronomical observatory. It operates three sites in Chile — La Silla, Paranal and Chajnantor — on behalf of its fifteen member states. It builds ALMA together with international partners, and designs the European Extremely Large Telescope.
ESO, the European Southern Observatory, builds and operates a suite of the world's most advanced ground-based astronomical telescopes
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Violent Origins of Disc Galaxies Probed by ALMA — New observations explain why Milky Way-like galaxies are so common in the Universe
For decades scientists have believed that galaxy mergers usually result in the formation of elliptical galaxies. Now, for the the first time, researchers using ALMA and a host of other radio telescopes have found direct evidence that merging galaxies can instead form disc galaxies, and that this outcome is in fact quite common. This surprising result could explain why there are so many spiral galaxies like the Milky Way in the Universe.
This Star Cluster Is Not What It Seems — VLT observations of Messier 54 show the lithium problem also applies outside our galaxy
This new image from the VLT Survey Telescope at ESO’s Paranal Observatory in northern Chile shows a vast collection of stars, the globular cluster Messier 54. This cluster looks very similar to many others but it has a secret. Messier 54 doesn’t belong to the Milky Way, but is part of a small satellite galaxy, the Sagittarius Dwarf Galaxy. This unusual parentage has now allowed astronomers to use the Very Large Telescope (VLT) to test whether there are also unexpectedly low levels of the element lithium in stars outside the Milky Way.
Lupus 4, a spider-shaped blob of gas and dust, blots out background stars like a dark cloud on a moonless night in this intriguing new image. Although gloomy for now, dense pockets of material within clouds such as Lupus 4 are where new stars form and where they will later burst into radiant life. The Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile captured this new picture.
Using the Atacama Large Millimeter/submillimeter Array (ALMA), and many other telescopes on the ground and in space, an international team of astronomers has obtained the best view yet of a collision that took place between two galaxies when the Universe was only half its current age. They enlisted the help of a galaxy-sized magnifying glass to reveal otherwise invisible detail. These new studies of the galaxy H-ATLAS J142935.3-002836 have shown that this complex and distant object looks like the well-known local galaxy collision, the Antennae Galaxies.
This image, captured by the Wide Field Imager at ESO’s La Silla Observatory in Chile, shows two dramatic star formation regions in the southern Milky Way. The first is of these, on the left, is dominated by the star cluster NGC 3603, located 20 000 light-years away, in the Carina–Sagittarius spiral arm of the Milky Way galaxy. The second object, on the right, is a collection of glowing gas clouds known as NGC 3576 that lies only about half as far from Earth.
About the ESO Science Outreach Network
The ESO education and Public Outreach Department has established a network of persons in the ESO Member states and other countries who serve as local contacts for the media in connection with ESO developments, Press Releases, etc. At the same time, they may help to provide useful contacts between the media and the scientists in their area. The ESON members, or their representatives, are typically full-time science communicators who know the national players (media, academia etc.) and regularly interact with them, are able to find a national angle, have a strong interest in promoting ESO and provide regular inputs and ideas for how to best reach the target groups in their area. More precisely, their mission is: "To act as ESO's media and outreach representative in the member states and potential member states with the general aim of promoting ESO's mission and demonstrating the many inspirational aspects of astronomy".
Contact in the U.K.
Science and Technology Facilities Council
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Wendy Ellison is a press officer for the Science and Technology Facilities Council (STFC), one of the UK's leading research organisations. STFC runs the UK Astronomy Technology Centre and RAL Space, funds astronomy research in the UK, and manages the UK subscription to ESO.
Wendy has a background in PR and science communication, working to promote the wide range of science coming out of STFC.