Agriculture
Keeping Bugs Away from Food
Seeds of the Future
Getting the dirt on carbon
Amphibians
Poison Dart Frogs
Toads
Salamanders
Animals
Bee Heat Cooks Invaders
Awake at Night
Crocodile Hearts
Behavior
The (kids') eyes have it
Mind-reading Machine
The case of the headless ant
Birds
Backyard Birds
Peafowl
Geese
Chemistry and Materials
Popping to Perfection
Big Machine Reveals Small Worlds
Hitting the redo button on evolution
Computers
Graphene's superstrength
The Book of Life
The solar system's biggest junkyard
Dinosaurs and Fossils
Fossil Forests
Meet the new dinos
Tiny Pterodactyl
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Earth
Unnatural Disasters
Arctic Algae Show Climate Change
Plastic-munching microbes
Environment
Sounds and Silence
Easy Ways to Conserve Water
Catching Some Rays
Finding the Past
Writing on eggshells
Salt and Early Civilization
A Long Haul
Fish
Barracudas
Electric Eel
Basking Sharks
Food and Nutrition
Chocolate Rules
The Essence of Celery
Building a Food Pyramid
GSAT English Rules
Pronouns
Subject and Verb Agreement
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
The Annual GSAT Scholarships
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
Results of GSAT are in schools this week
GSAT Exams Jamaica Scholarships
42,000 students will sit for the GSAT Exam in two weeks
2014 GSAT Results for Jamaican Kids
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
Setting a Prime Number Record
Math and our number sense: PassGSAT.com
How a Venus Flytrap Snaps Shut
Human Body
Teen Brains, Under Construction
The tell-tale bacteria
Sea Kids See Clearly Underwater
Invertebrates
Beetles
Horseshoe Crabs
Black Widow spiders
Mammals
Tigers
Deers
Beagles
Parents
Raise a Lifelong Reader by Reading Aloud
Expert report highlights the importance to parents of reading to children!
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
Black Hole Journey
The Mirror Universe of Antimatter
Powering Ball Lightning
Plants
Pumping Up Poison Ivy
White fuzzy mold not as friendly as it looks
Flower family knows its roots
Reptiles
Asp
Garter Snakes
Lizards
Space and Astronomy
The two faces of Mars
Baby Star
A Very Distant Planet Says "Cheese"
Technology and Engineering
A Clean Getaway
Morphing a Wing to Save Fuel
Beyond Bar Codes
The Parts of Speech
Pronouns
Problems with Prepositions
What is a Preposition?
Transportation
Ready, unplug, drive
Troubles with Hubble
Flying the Hyper Skies
Weather
Watering the Air
Polar Ice Feels the Heat
Weekend Weather Really Is Different
Add your Article

Ready, Set, Supernova

Stars explode all the time in outer space, but astronomers usually see the explosions only after they've happened. One type of stellar explosion, called a supernova, can glow for days or even months. Now, for the first time, scientists have actually caught a star in the act of going supernova. The research team was using NASA's Swift spacecraft to study a galaxy called NGC 2770. They had aimed the spacecraft's X-ray telescope at a recently discovered supernova. Supernovas are dramatic explosions that happen when a really big star (as least eight times as big as our sun) runs out of fuel. Exploding stars release a lot of energy, much of it in the form of X rays. Just as the telescope began observing the target supernova, the spacecraft recorded a fresh batch of X rays coming from another region in the same galaxy. The X-ray burst lasted for about 7 minutes. Although no supernova was visible, these scientists suspected they had just witnessed the beginning of a star undergoing such a catastrophic explosion. Using the Gemini North telescope on the Hawaiian mountain Mauna Kea, the researchers then took another look at the same spot in the sky as where the X-ray burst had been. The region is now called SN 2008d. There they saw a visible-light display, which confirmed that a supernova had indeed occurred. Astronomers usually can't spot supernovas until the stars send out large amounts of visible light. By then, however, key information about early stages of the explosive process has vanished. In the case of SN 2008d, the energy and length of the initial release of X rays suggest that the star was compact. Also, it hurled out lots of gas—called a stellar wind—from its surface before it went supernova. For decades, scientists predicted that supernovas would send off X rays right before exploding. Now they finally have evidence that they were right. The new discovery suggests that astronomers might be able to use wide-angle X-ray telescopes to catch the very beginnings of hundreds of supernova explosions each year.—Emily Sohn

Ready, Set, Supernova
Ready, Set, Supernova








Designed and Powered by HBJamaica.com™