Agriculture
Cleaning Up Fish Farms
Watching out for vultures
Fast-flying fungal spores
Amphibians
Poison Dart Frogs
Tree Frogs
Toads
Animals
Helping the Cause of Macaws
Roboroach and Company
Baboons Listen for Who's Tops
Behavior
The Disappearing Newspaper
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
A brain-boosting video game
Birds
Mockingbirds
Parakeets
Nightingales
Chemistry and Materials
Undercover Detectives
Moon Crash, Splash
Makeup Science
Computers
Graphene's superstrength
Two monkeys see a more colorful world
Nonstop Robot
Dinosaurs and Fossils
Hall of Dinos
Meet your mysterious relative
Dino Flesh from Fossil Bone
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2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Earth
Undersea Vent System Active for Ages
Drilling Deep for Fuel
What is groundwater
Environment
A Change in Leaf Color
Snow Traps
Blooming Jellies
Finding the Past
Words of the Distant Past
A Volcano's Deadly Ash
Stonehenge Settlement
Fish
Eels
Marlin
Megamouth Sharks
Food and Nutrition
Yummy bugs
Food for Life
In Search of the Perfect French Fry
GSAT English Rules
Adjectives and Adverbs
Subject and Verb Agreement
Problems with Prepositions
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Ministry of Education Announces 82 GSAT Scholarships for 2010
How are students placed after passing the GSAT exam
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Deep-space dancers
Losing with Heads or Tails
Human Body
Music in the Brain
Tapeworms and Drug Delivery
Gut Microbes and Weight
Invertebrates
Hermit Crabs
Giant Clam
Dragonflies
Mammals
Lynxes
Wolves
Lhasa Apsos
Parents
Choosing a Preschool: What to Consider
The Surprising Meaning and Benefits of Nursery Rhymes
What Not to Say to Emerging Readers
Physics
Gaining a Swift Lift
The Particle Zoo
Spin, Splat, and Scramble
Plants
Fastest Plant on Earth
Assembling the Tree of Life
A Giant Flower's New Family
Reptiles
Reptiles
Box Turtles
Chameleons
Space and Astronomy
Planet Hunters Nab Three More
Planets on the Edge
Big Galaxy Swallows Little Galaxy
Technology and Engineering
Morphing a Wing to Save Fuel
A Micro-Dose of Your Own Medicine
Dancing with Robots
The Parts of Speech
What is a Preposition?
What is a Noun
Countable and Uncountable Nouns
Transportation
Reach for the Sky
Ready, unplug, drive
Middle school science adventures
Weather
The solar system's biggest junkyard
Polar Ice Feels the Heat
The Best Defense Is a Good Snow Fence
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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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