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Where Have All the Bees Gone?
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A Tongue and a Half
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The Science Fair Circuit
Pipefish power from mom
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Big Machine Reveals Small Worlds
The newest superheavy in town
Nanomagnets Corral Oil
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Galaxies far, far, far away
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Play for Science
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Earth
Drilling Deep for Fuel
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Earth Rocks On
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What is groundwater
To Catch a Dragonfly
Groundwater and the Water Cycle
Finding the Past
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Digging Up Stone Age Art
Stonehenge Settlement
Fish
Marlin
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Food and Nutrition
In Search of the Perfect French Fry
Sponges' secret weapon
The Essence of Celery
GSAT English Rules
Who vs. Whom
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Whoever vs. Whomever
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Setting a Prime Number Record
Human Body
Sun Screen
Sea Kids See Clearly Underwater
Hear, Hear
Invertebrates
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Squid
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Labradors
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Giant Panda
Parents
Choosing a Preschool: What to Consider
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Raise a Lifelong Reader by Reading Aloud
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Gaining a Swift Lift
Black Hole Journey
Einstein's Skateboard
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Hungry bug seeks hot meal
Fastest Plant on Earth
Getting the dirt on carbon
Reptiles
Rattlesnakes
Reptiles
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Space and Astronomy
A Smashing Display
Catching a Comet's Tail
Asteroid Moons
Technology and Engineering
Spinach Power for Solar Cells
Musclebots Take Some Steps
A Micro-Dose of Your Own Medicine
The Parts of Speech
What is a Preposition?
Adjectives and Adverbs
Problems with Prepositions
Transportation
Charged cars that would charge
Are Propellers Fin-ished?
Robots on a Rocky Road
Weather
The solar system's biggest junkyard
The Best Defense Is a Good Snow Fence
Watering the Air
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Cousin Earth

As their search continues, astronomers are finding more and more planets orbiting nearby stars. This time, they've detected a solid planet that's just 15 light-years from Earth. Many details about the planet remain unknown because the astronomers didn't see it directly. Instead, they were able to detect how the planet's gravity makes its star wobble a little bit. Out of 156 planets discovered so far in other solar systems, the new extrasolar planet is the smallest one yet found. It's about 7.5 times heavier than Earth. Along with two, much bigger planets, the new world orbits a star called Gliese 876. The planet takes just 1.9 days to complete an orbit around Gliese 876. So, its year is much, much shorter than ours. It's so close to its star that its surface is hot enough to roast a chicken. Most extrasolar planets that have been found so far are big balls of gas, like Jupiter and Saturn. Because the planet's mass is low, it probably couldn't hold onto much gas. So, scientists suspect that it's rocky. "This could be the first [known] rocky planet around any normal star other than the sun," says team member Jack Lissauer of NASA's Ames Research Center in Mountain View, Calif. Scientists are still trying to figure out how rocky planets might form so close to their stars. Whatever the answer, the new discovery gives researchers confidence that they will one day find even closer cousins to Earth somewhere in the universe. And, on a planet resembling Earth, they might also discover traces of life as we know it.E. Sohn

Cousin Earth
Cousin Earth








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