Comunicados de Prensa

18 Julio 2011: Astronomers from the National Optical Astronomy Observatory (NOAO) and their collaborators have found that hundreds of the stars found in the Large Magellanic Cloud (LMC) were stolen from another nearby galaxy – the Small Magellanic Cloud (SMC). The Large and Small Magellanic Clouds are both neighbor galaxies to our Milky Way Galaxy and easily visible to the unaided eye from the southern hemisphere.

29 Junio 2011: An international team of astronomers announced today the discovery of the most distant known supermassive black hole, seen as a luminous quasar [1] caused by gas falling into the black hole.

25 Mayo 2011: In a game of cosmological one-upmanship, what is likely the most distant gamma ray burst (GRB) ever detected could be presenting humanity with a glimpse back to within about half a billion years of the Big Bang. "Like any finding of this sort there are uncertainties,” said the study's principal investigator Antonino Cucchiara. “However, if I were in Vegas, I would never bet against the odds that this is the most distant GRB ever seen and we estimate that there is even a 23% chance that it is the most distant object ever observed in the universe."

4 Mayo 2011: An all-time favorite of skywatchers on both hemispheres, the Lagoon Nebula (Messier 8, or M8) is among the most striking examples of a stellar nursery in our neighborhood of the Milky Way galaxy. Visible in small telescopes and binoculars its fuzzy glow reveals the type of chaotic environment where new stars are born.

29 Marzo 2011: A New Gemini Podcast, In October of 2010, the Gemini South primary mirror received a shiny new coating of protected silver. A new two-part podcast allows you to experience an insider's view of this exciting process, one that few outside of Gemini have ever witnessed. Navigate to the Podcast by clicking on the video clip below.

17 Marzo 2011: Poorly-aimed and unshielded outdoor lights are more than an annoyance. They waste more than $2 billion (17 billion kilowatt-hours) of energy in the United States each year. Poorly shielded roadway lights are also a safety and glare hazard, especially for older citizens. Under an unpolluted sky we ought to see more than 2000 stars, yet we see less than a hundred from many cities. The Milky Way is unknown to most city dwellers.

23 Febrero 2011: When two galaxies merge to form a giant, the central supermassive black hole in the new galaxy develops an insatiable appetite. However, this ferocious appetite is unsustainable.

26 Enero 2011: In the early morning of January 22, 2011 at 4:38am, Chile Summer Time, a new era in high-resolution astronomy began with the successful propagation of a 5-star sodium laser guide star “constellation” in the skies over Cerro Pachón in Chile.

12 Enero 2011: Astronomers led by Karl Gebhardt of The University of Texas at Austin have measured the most massive known black hole in our cosmic neighborhood by combining data from a giant telescope in Hawai'i and a smaller telescope in Texas. The result is an ironclad mass of 6.6 billion Suns for the black hole in the giant elliptical galaxy M87. This enormous mass is the largest ever measured for a black hole using a direct technique. Given its massive size, M87 is the best candidate for future studies to actually "see" a black hole for the first time, rather than relying on indirect evidence of their existence as astronomers have for decades.

24 Noviembre 2010: This image is a composite of three color images taken on Nov. 18, 2010, by the Gemini North telescope in Hawaii. The composite image shows a belt that had previously vanished in Jupiter's atmosphere is now reappearing.

27 Octubre 2010: Astronomers using NASA’s Spitzer Space Telescope have detected arrangements of carbon atoms known as buckyballs outside of the Milky Way galaxy for the first time. Sir Harry Kroto of Florida State University, who won a Nobel Prize for discovering buckyballs, says life may even owe its existence to the atom “cages” which resemble soccer balls. The discovery of buckyballs in the Small Magellanic Cloud suggests that these complex molecules may be present around many stars where it was predicted they would be unlikely to form. Extensive follow-up studies using ground-based telescopes will be used to establish the conditions helpful for the formation of buckyballs in our galaxy and other galaxies.

21 Septiembre 2010: New measurements of the Kitt Peak National Observatory night sky brightness by Lowell Observatory astronomers show that, despite Tucson’s rapid growth, the sky brightness has remained remarkably constant over the past 20 years. The measurements suggest that the strengthened lighting ordinances adopted by Tucson and surrounding Pima County have been effective in suppressing the sky glow caused by outdoor lighting.

9 Septiembre 2010: Observing a fireball streaking through the atmosphere of another planet is a rare occurrence. However, two amateur astronomers did just that on June 3, 2010. Their images prompted the twin Gemini Observatory telescopes in Hawai‘i and Chile to join other telescopes around (and above) the world to see if the object left any trace of its passage into Jupiter’s cloudtops.

13 Agosto 2010: In a report released this morning, “New Worlds and New Horizons in Astronomy and Astrophysics,” a prestigious committee convened by the National Research Council for the National Academy of Sciences ranked the Large Synoptic Survey Telescope (LSST) as its top priority for the next large ground‐based astronomical facility.

29 Junio 2010: A planet only about eight times the mass of Jupiter has been confirmed orbiting a Sun-like star at over 300 times farther from the star than the Earth is from our Sun. The newly confirmed planet is the least massive planet known to orbit at such a great distance from its host star. The discovery utilized high-resolution adaptive optics technology at the Gemini Observatory to take direct images and spectra of the planet.

25 Mayo 2010: The starburst galaxy NGC 1313 is a stellar incubator delivering stars on a scale rarely seen in a single galaxy of its size. Now a striking new Gemini Observatory image reveals the multitudes of glowing gas clouds in this galaxy’s arms. These colorful clouds are the tell-tale sign of star-formation in this prolific star factory.

12 Mayo 2010: A newly discovered gravitational lens in a relatively nearby galaxy cluster is leading astronomers to conclude that the cluster hosts the most massive galaxy known in our local universe. The study also reaffirms that galactic cannibalism is one reason that this galaxy is so obese, tipping the scales at up to 30 trillion times the mass of our Sun.

6 Abril 2010: The cliché that youth grow up so fast is about to take on a new twist. This is due to the discovery of a very young planet-like object (with a mass somewhere between 5-10 times that of Jupiter), paired with a low-mass brown dwarf. What is unique about this system is that the planet-like body appears to have formed in about a million years–more rapidly than some theories of planet formation predict.

3 Marzo 2010: With half of the world’s population now living in cities, many urban dwellers have never experienced—and maybe never will—the wonderment of pristinely dark skies. This loss, caused by light pollution, is a concern on many other fronts as well: safety, energy conservation, cost, health, and effects on wildlife. Yet, even though light pollution is a serious and growing global concern, it’s one of the easiest environmental problems that you can address on local levels.

22 Febrero 2010: In one of the nearest giant clusters of galaxies, Abell 3627, astronomers have reported finding a galaxy with two distinct tails of gas. Of particular significance, there are unambiguous signs of current star formation in this gas tail, providing the first evidence that star formation can actively take place in the cold intergalactic medium. These results challenge ideas based on the current computer simulations and modeling.