Scientists unveil “extraordinary” discovery: Earth-sized planet outside our solar systemHATFIELD, England — In the search for Earth-like planets, astronomers zeroed in on two places that look awfully familiar to home. One is close to the right size. The other is in the right place. European researchers said they not only found the smallest exoplanet ever, called Gliese 581 e, but realized that a neighboring planet discovered earlier, Gliese 581 d, was in the prime habitable zone for potential life. Study shows decline in flow of many major rivers, which scientists blame on climate changeWASHINGTON — The flow of water in the world’s largest rivers has declined over the past half-century, with significant changes found in about a third of the big rivers. Moderate quake shakes China’s northwest, no injuries immediately reportedBEIJING — Chinese seismological authorities say a moderate earthquake registering a magnitude of 5.5 Sunday has struck China’s far western Xinjiang region. No injuries were immediately reported. |
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