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Home > News > Today's News
In 1995, the Hubble Space Telescope's "Pillars of Creation" image of M16, the Eagle Nebula, became one of the most iconic images of the twentieth century. Now, two of ESA's orbiting observatories have shed new light on this enigmatic star-forming region.
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It sounds like the start of a bad joke: "Did you hear the one about the bar at the center of the Milky Way Galaxy?" Astronomers first recognized almost 80 years ago that the Milky Way Galaxy is a huge spiral galaxy. It's as if the solar system is a bug on the spoke of a bicycle wheel. But in recent decades astronomers have suspected that the center of our galaxy has an elongated stellar structure, or bar, that is hidden from view by dust and gas. As part of a study dubbed BRAVA (for Bulge Radial Velocity Assay), a team analyzing stellar motions in the galactic center confirms a massive bar, with one end pointed almost in the direction of the sun, which is rotating like a solid object.
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After 16 years in space, NASA's Rossi X-ray Timing Explorer made its last observation on January 4, 2012. Rossi opened a new window into the workings of neutron stars and black holes. Using its data, astronomers established the existence of highly magnetized neutron stars (known as magnetars) and discovered the first accreting millisecond pulsars. The observatory also provided the first observational evidence of "frame-dragging" in the vicinity of a black hole, an effect predicted by Einstein's general theory of relativity. The 7,000-pound satellite is expected to re-enter the atmosphere between 2014 and 2023.
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100-foot-wide optical telescope is nine times bigger than ones in use today - Will pick out objects 13 billion light years away - Sharp enough to pick out planets orbiting distant suns
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Spectacular new images of a gigantic crater on the moon were captured recently by a low-skimming NASA satellite.
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The orbits of the giant planets were affected by a dynamical instability when the solar system was only about 600 million years old. As a result, the giant planets and smaller bodies scattered away from each other and in the process the early solar system may have ejected a giant gas planet according to scientists at the Southwest Research Institute in San Antonio, Texas.
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Just in time for the holidays, astronomers have come across a new image from NASA's Wide-field Infrared Survey Explorer (WISE) that some say resembles a wreath. You might even think of the red dust cloud as a cheery red bow, and the bluish-white stars as silver bells. This star-forming nebula is named Barnard 3. Baby stars are being born throughout the dusty region, while the "silver bell" stars are located both in front of and behind the nebula.
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T'was the Night after Christmas and all through the house, not a creature was stirring ... because everyone was outside watching the planets align?
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The Higgs boson is the only particle predicted by the Standard Model of particle physics that has not yet been experimentally observed. Its observation would be a major step forward in our understanding of how particles acquire mass. Conversely, not finding the Higgs boson would be very significant and would lead to a greater focus on alternative theories that extend beyond the Standard Model, with associated Higgs-like particles. In a seminar held at CERN this week, the ATLAS and CMS experiments presented the status of their searches for the Higgs boson. Significant progress in the search has been made, but not enough to make any conclusive statement on the existence or non-existence of the elusive Higgs. However, tantalising hints have been seen by both experiments, but these are not yet strong enough to claim a discovery.
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Dec. 16, 2011: This morning, an armada of spacecraft witnessed something that many experts thought impossible. Comet Lovejoy flew through the hot atmosphere of the sun and emerged intact.
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Dec 9, 2011: NASA's Dawn spacecraft spent the last four years voyaging to asteroid Vesta – and may have found a planet.
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NASA's Mars rover Opportunity has found bright veins of a mineral, apparently gypsum, deposited by water near the rim of Endeavour Crater.
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In the distant reaches of the universe, almost 13 billion light-years from Earth, a strange species of galaxies lay hidden. Cloaked in dust and dimmed by the intervening distance, even the Hubble Space Telescope couldn't spy it. It took the revealing power of NASA's Spitzer Space Telescope to uncover not one, but four remarkably red galaxies. And while astronomers can describe the members of this new "species," they can't explain what makes them so red.
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Astronomers have accurately measured the diameter of the faraway dwarf planet Eris for the first time by catching it as it passed in front of a faint star. The observations show that Eris is an almost perfect twin of Pluto in size. Eris appears to have a very reflective surface, suggesting that it is uniformly covered in a thin layer of ice, probably a frozen atmosphere.
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The largest survey to date of distant exploding stars is giving astronomers new clues to what's behind the Type Ia supernovae they use to measure distances across the cosmos. These stellar explosions helped astronomers conclude more than a decade ago that dark energy is accelerating the expansion of the universe. But what causes Type Ia supernovae to explode is still a mystery.
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If an alien civilization builds brightly-lit cities like those shown in this artist's conception, future generations of telescopes might allow us to detect them. This would offer a new method of searching for extraterrestrial intelligence in our Galaxy.
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Say what? The name of the star is SAO 206462. It's a young star more than four hundred light years from Earth in the constellation Lupus, the wolf. SAO 206462 attracted attention because it has a circumstellar disk
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A mystery that began nearly 2,000 years ago, when Chinese astronomers witnessed what would turn out to be an exploding star in the sky, has been solved. In 185 A.D., Chinese astronomers noted a "guest star" that mysteriously appeared in the sky and stayed for about 8 months. By the 1960s, scientists had determined that the mysterious object was the first documented supernova. New infrared observations from NASA's Spitzer Space Telescope and Wide-field Infrared Survey Explorer, or WISE, reveal how this first supernova ever recorded occurred and how its shattered remains ultimately spread out to great distances.
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Like all galaxies, our Milky Way is home to a strange substance called dark matter. Dark matter is invisible, but betrays its presence only through its gravitational pull. Without dark matter holding stars together, our galaxy's speedy stars would fly off in all directions. The nature of dark matter is a mystery -- a mystery that a new study has only deepened.
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