ScienceDaily: Astronomy News |
- Rife with hype, exoplanet study needs patience and refinement
- When a black hole shreds a star, a bright flare tells the story
- Hubble watches stars' clockwork motion in nearby galaxy
| Rife with hype, exoplanet study needs patience and refinement Posted: 18 Feb 2014 12:38 PM PST Despite many trumpeted results, few 'hard facts' about exoplanet atmospheres have actually been collected, and most of these data are of 'marginal utility,' according to a review of exoplanet research by an astrophysicist. The dominant methods for studying exoplanet atmospheres are not intended for planets trillions of miles from Earth. Instead, the future of exoplanet study should focus on the more difficult but comprehensive method of spectrometry. |
| When a black hole shreds a star, a bright flare tells the story Posted: 18 Feb 2014 11:32 AM PST A new study explains what happens during the disruption of a normal sun-like star by a supermassive black hole. The study shows why observers might fail to see evidence of the hydrogen in the star, casting doubt on a 2012 report of the disruption of an exotic helium star. |
| Hubble watches stars' clockwork motion in nearby galaxy Posted: 18 Feb 2014 11:22 AM PST Using the sharp-eyed NASA Hubble Space Telescope, astronomers have for the first time precisely measured the rotation rate of a galaxy based on the clock-like movement of its stars. According to their analysis, the central part of the neighboring galaxy, called the Large Magellanic Cloud (LMC), completes a rotation every 250 million years. |
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