Komunikaty prasowe

21 kwietnia 2010: The Cat’s Paw Nebula, NGC 6334, is a huge stellar nursery, the birthplace of hundreds of massive stars. In a magnificent new ESO image taken with the Visible and Infrared Survey Telescope for Astronomy (VISTA) at the Paranal Observatory in Chile, the glowing gas and dust clouds obscuring the view are penetrated by infrared light and some of the Cat’s hidden young stars are revealed.

13 kwietnia 2010: The discovery of nine new transiting exoplanets is announced today at the RAS National Astronomy Meeting (NAM2010). When these new results were combined with earlier observations of transiting exoplanets astronomers were surprised to find that six out of a larger sample of 27 were found to be orbiting in the opposite direction to the rotation of their host star — the exact reverse of what is seen in our own Solar System. The new discoveries provide an unexpected and serious challenge to current theories of planet formation. They also suggest that systems with exoplanets of the type known as hot Jupiters are unlikely to contain Earth-like planets.

7 kwietnia 2010: According to the first ever infrared analysis of the atmosphere of Neptune's moon Triton, summer is in full swing in its southern hemisphere. The European observing team used ESO's Very Large Telescope and discovered carbon monoxide and made the first ground-based detection of methane in Triton's thin atmosphere. These observations revealed that the thin atmosphere varies seasonally, thickening when warmed.

31 marca 2010: Today, ESO is unveiling an image of the little known Gum 19, a faint nebula that, in the infrared, appears dark on one half and bright on the other. On one side hot hydrogen gas is illuminated by a supergiant blue star called V391 Velorum. New star formation is taking place within the ribbon of luminous and dark material that brackets V391 Velorum’s left in this perspective. After many millennia, these fledgling stars, coupled with the explosive demise of V391 Velorum as a supernova, will likely alter Gum 19’s present Janus-like appearance.

24 marca 2010: Astronomers have long known that in many surveys of the very distant Universe, a large fraction of the total intrinsic light was not being observed. Now, thanks to an extremely deep survey using two of the four giant 8.2-metre telescopes that make up ESO’s Very Large Telescope (VLT) and a unique custom-built filter, astronomers have determined that a large fraction of galaxies whose light took 10 billion years to reach us have gone undiscovered. The survey also helped uncover some of the faintest galaxies ever found at this early stage of the Universe.

21 marca 2010: For the first time, astronomers have made direct measurements of the size and brightness of regions of star-birth in a very distant galaxy, thanks to a chance discovery with the APEX telescope. The galaxy is so distant, and its light has taken so long to reach us, that we see it as it was 10 billion years ago. A cosmic “gravitational lens” is magnifying the galaxy, giving us a close-up view that would otherwise be impossible. This lucky break reveals a hectic and vigorous star-forming life for galaxies in the early Universe, with stellar nurseries forming one hundred times faster than in more recent galaxies. The research is published online today in the journal Nature.

17 marca 2010: Combining observations from the CoRoT satellite and the ESO HARPS instrument, astronomers have discovered the first “normal” exoplanet that can be studied in great detail. Designated Corot-9b, the planet regularly passes in front of a star similar to the Sun located 1500 light-years away from Earth towards the constellation of Serpens (the Snake).

16 marca 2010: New ground-breaking thermal images obtained with ESO’s Very Large Telescope and other powerful ground-based telescopes show swirls of warmer air and cooler regions never seen before within Jupiter’s Great Red Spot, enabling scientists to make the first detailed interior weather map of the giant storm system linking its temperature, winds, pressure and composition with its colour.

3 marca 2010: The delicate nebula NGC 1788, located in a dark and often neglected corner of the Orion constellation, is revealed in a new and finely nuanced image that ESO is releasing today. Although this ghostly cloud is rather isolated from Orion’s bright stars, the latter’s powerful winds and light have had a strong impact on the nebula, forging its shape and making it home to a multitude of infant suns.

24 lutego 2010: Today ESO has released a dramatic new image of NGC 346, the brightest star-forming region in our neighbouring galaxy, the Small Magellanic Cloud, 210 000 light-years away towards the constellation of Tucana (the Toucan). The light, wind and heat given off by massive stars have dispersed the glowing gas within and around this star cluster, forming a surrounding wispy nebular structure that looks like a cobweb. NGC 346, like other beautiful astronomical scenes, is a work in progress, and changes as the aeons pass. As yet more stars form from loose matter in the area, they will ignite, scattering leftover dust and gas, carving out great ripples and altering the face of this lustrous object.

17 lutego 2010: After years of successful concealment, the most primitive stars outside our Milky Way galaxy have finally been unmasked. New observations using ESO’s Very Large Telescope have been used to solve an important astrophysical puzzle concerning the oldest stars in our galactic neighbourhood — which is crucial for our understanding of the earliest stars in the Universe.

10 lutego 2010: The Orion Nebula reveals many of its hidden secrets in a dramatic image taken by ESO’s new VISTA survey telescope. The telescope’s huge field of view can show the full splendour of the whole nebula and VISTA’s infrared vision also allows it to peer deeply into dusty regions that are normally hidden and expose the curious behaviour of the very active young stars buried there.

3 lutego 2010: ESO is releasing a magnificent VLT image of the giant stellar nursery surrounding NGC 3603, in which stars are continuously being born. Embedded in this scenic nebula is one of the most luminous and most compact clusters of young, massive stars in our Milky Way, which therefore serves as an excellent “local” analogue of very active star-forming regions in other galaxies. The cluster also hosts the most massive star to be “weighed” so far.

27 stycznia 2010: Astronomers using ESO’s Very Large Telescope have detected, in another galaxy, a stellar-mass black hole much farther away than any other previously known. With a mass above fifteen times that of the Sun, this is also the second most massive stellar-mass black hole ever found. It is entwined with a star that will soon become a black hole itself.

20 stycznia 2010: ESO has just released a stunning new image of the vast cloud known as the Cat’s Paw Nebula or NGC 6334. This complex region of gas and dust, where numerous massive stars are born, lies near the heart of the Milky Way galaxy, and is heavily obscured by intervening dust clouds.

13 stycznia 2010: By studying a triple planetary system that resembles a scaled-up version of our own Sun’s family of planets, astronomers have been able to obtain the first direct spectrum — the “chemical fingerprint” [1] — of a planet orbiting a distant star [2], thus bringing new insights into the planet's formation and composition. The result represents a milestone in the search for life elsewhere in the Universe.

4 stycznia 2010: Sieć ALMA (Atacama Large Millimeter/submillimeter Array) przeszła krok milowy decydujący o jakości obrazów, które będą znakiem rozpoznawczym tego nowego, rewolucyjnego narzędzia dla astronomii. Astronomowie i inżynierowie po raz pierwszy udanie połączyli trzy anteny obserwatorium na terenie obserwacyjnym na wysokości 5000 m n.p.m. w północnym Chile. Obecność trzech anten pracujących razem dostarcza brakującego elementu do korygowania błędów, które występują, gdy pracują jedynie dwie anteny, torując w ten sposób drogę do uzyskiwania precyzyjnych obrazów zimnego Wszechświata w niespotykanej rozdzielczości.

16 grudnia 2009: Astronomowie odkryli drugą super-Ziemię [1], dla której ustalili masę i promień, co daje istotne przesłanki co do jej struktury. To także pierwsza super-Ziemia, na której znaleziono atmosferę. Ta planeta pozasłoneczna, krążąca wokół małej gwiazdy odległej zaledwie 40 lat świetlnych od nas, otwiera dramatycznie nowe perspektywy w zadaniu poszukiwania zamieszkiwalnych światów. Planeta GJ1214b ma masę około sześć razy większą niż Ziemia, a jej wnętrze prawdopodobnie składa się z lodu wodnego. Jej powierzchnia wydaje się być naprawdę gorąca, a planeta jest otoczona przez gęstą atmosferę, co czyni ją niegościnną dla życia takiego jakie znamy na Ziemi.

11 grudnia 2009: Nowy teleskop - VISTA (Visible and Infrared Survey Telescope for Astronomy – Widzialny i Podczerwony Teleskop do Przeglądów Astronomicznych) – właśnie rozpoczął prace w ESO w Obserwatorium Paranal i wykonał swoje pierwsze zdjęcia. VISTA to teleskop do przeglądów pracujący na falach podczerwonych. Jest największym na świecie teleskopem dedykowanym do mapowania nieba. Jego wielkie lustro, szerokie pole widzenia oraz bardzo czułe detektory ujawnią kompletnie nowy widok południowego nieba. Spektakularne nowe zdjęcia Mgławicy Płomień (Flame Nebula), centrum naszej galaktyki Drogi Mlecznej oraz Gromady Galaktyk Fornax (Piec) pokazują, że teleskop pracuje doskonale.

7 grudnia 2009: An extensive study made with ESO’s Very Large Telescope deepens a long-standing mystery in the study of stars similar to the Sun. Unusual year-long variations in the brightness of about one third of all Sun-like stars during the latter stages of their lives still remain unexplained. Over the past few decades, astronomers have offered many possible explanations, but the new, painstaking observations contradict them all and only deepen the mystery. The search for a suitable interpretation is on.