Agriculture
Microbes at the Gas Pump
Chicken Eggs as Drug Factories
Watering the Air
Amphibians
Frogs and Toads
Newts
Poison Dart Frogs
Animals
Roach Love Songs
Insects Take a Breather
Bee Disease
Behavior
Puberty gone wild
Video Game Violence
Pain Expectations
Birds
Penguins
Condors
Dodos
Chemistry and Materials
Flytrap Machine
Butterfly Wings and Waterproof Coats
Meteorites may have sparked life on Earth
Computers
Graphene's superstrength
Troubles with Hubble
Fingerprint Evidence
Dinosaurs and Fossils
Ancient Critter Caught Shedding Its Skin
Hall of Dinos
Winged Insects May Go Way Back
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
Explorer of the Extreme Deep
Sky Dust Keeps Falling on Your Head
Ancient Heights
Environment
A Change in Time
Will Climate Change Depose Monarchs?
Power of the Wind
Finding the Past
Ancient Art on the Rocks
Settling the Americas
Childhood's Long History
Fish
Halibut
Skates and Rays
Skates
Food and Nutrition
Turning to Sweets, Fats to Calm the Brain
A Pepper Part that Burns Fat
In Search of the Perfect French Fry
GSAT English Rules
Problems with Prepositions
Adjectives and Adverbs
Capitalization Rules
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
Mastering The GSAT Exam
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
GSAT stars reap scholarship glory
Access denied - Disabled boy aces GSAT
GSAT Mathematics
A Sweet Advance in Candy Packing
Setting a Prime Number Record
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Human Body
Dreaming makes perfect
Heart Revival
Walking to Exercise the Brain
Invertebrates
Flatworms
Arachnids
Millipedes
Mammals
Gray Whale
African Elephants
Pekingese
Parents
Expert report highlights the importance to parents of reading to children!
How children learn
Choosing a Preschool: What to Consider
Physics
The Pressure of Scuba Diving
Spin, Splat, and Scramble
The Particle Zoo
Plants
Underwater Jungles
Tracking the Sun Improves Plant Pollen
Flower family knows its roots
Reptiles
Alligators
Black Mamba
Box Turtles
Space and Astronomy
A Planet from the Early Universe
A Puffy Planetary Puzzle
Dark Galaxy
Technology and Engineering
Space Umbrellas to Shield Earth
Crime Lab
A Clean Getaway
The Parts of Speech
What is a Preposition?
What is a Verb?
Countable and Uncountable Nouns
Transportation
Reach for the Sky
Seen on the Science Fair Scene
Charged cars that would charge
Weather
The solar system's biggest junkyard
Where rivers run uphill
Polar Ice Feels the Heat
Add your Article

Asteroid Moons

Three's company? In the realm of asteroids, that's something new. For the first time, astronomers have found an asteroid with more than one moon. The asteroid, called 87 Sylvia, is one of the largest in the asteroid belt, a collection of rocky objects that orbit the sun between Mars and Jupiter. The lumpy, potato-shaped asteroid is about 280 kilometers (174 miles) wide. In 2001, astronomers announced finding a moon orbiting 87 Sylvia, making it one of about 60 asteroids known to have a moon. After the announcement of 87 Sylvia's first moon, an astronomer from the University of California, Berkeley and several coworkers wanted to see if there were additional moons. Asteroid moons probably form when large asteroids collide and break apart. Scientists have suspected that the process could end up leaving more than one moon around certain asteroids. The astronomers looked through 2 months of images of 87 Sylvia. They spotted the second moon in images taken by an infrared camera on the European Southern Observatory's Very Large Telescope in Chile. The first moon measures about 18 kilometers (11 miles) across and orbits about 1,360 kilometers (845 miles) from 87 Sylvia. The newly discovered moon is smaller—about 7 kilometers (4.3 miles) across. It orbits 710 kilometers (441 miles) away. By analyzing the orbits of 87 Sylvia's moons, the astronomers were able to learn more about the asteroid itself. Like some other asteroids, it has lots of holes in it. Up to 60 percent of it, in fact, is empty space. The asteroid and its moons appear to be the result of a collision between two large asteroids. Gravity keeps the lightweight objects loosely bound together. Astronomers call this kind of system a "rubble pile." Discovered in 1866, 87 Sylvia was named after Rhea Sylvia, a figure in Roman mythology. In the same spirit, the astronomers who discovered 87 Sylvia's moons propose naming the moons Romulus and Remus, after Rhea's two mythical sons who supposedly founded Rome.—E. Sohn

Asteroid Moons
Asteroid Moons








Designed and Powered by HBJamaica.com™