. Energy News .




.
DEEP IMPACT
The 3D Lyrid Meteor Shower
by Dr. Tony Phillips for NASA Science News
Huntsville AL (SPX) Apr 20, 2012

View the ScienceCast on the Lyrid Meteor Shower

This weekend, NASA scientists, amateur astronomers, and an astronaut on board the International Space Station will attempt the first-ever 3D photography of meteors from Earth and space.

"The annual Lyrid meteor shower peaks on April 21-22," says Bill Cooke, the head of NASA's Meteoroid Environment Office. "We're going to try to photograph some of these 'shooting stars' simultaneously from ground stations, from a research balloon in the stratosphere, and from the space station." Lyrid meteors come from Comet Thatcher.

Every year in late April Earth passes through a stream of debris from the old comet, which has been bringing Lyrid meteors to our planet for at least 2600 years. Specks of Thatcher's dust hit the top of atmosphere at 110,000 mph and disintegrate in a flurry of meteors. Most years, the shower produces about 15 to 20 Lyrids per hour.

This is a good year to look for Lyrids because the Moon will be new when the shower peaks. Dark skies favor sightings both from Earth and from Earth orbit.

"Even though the Lyrids are not noted for spectacular rates, the combination of a New Moon and a very favorable viewing geometry from the International Space Station (ISS) presents a unique opportunity to simultaneously image shower meteors from above and below," says Cooke.

Flight Engineer Don Pettit will be operating the camera on the space station.

"Even though his equipment was designed for tasks other than meteor observing, Don is a skilled astrophotographer, and we have every confidence that he will maximize the chances of capturing a Lyrid from 400 km above Earth's surface."

As the Space Station passes over North America multiple times on the night of April 21st, a network of all-sky cameras--some operated by amateur astronomers and others by NASA--will be recording the shower. In Bishop, California, a group of high school and middle school students will launch a helium balloon to the stratosphere. The payload floating some 40 km above Earth's surface will carry an experimental low-cost meteor camera and recorder developed by the Meteoroid Environment Office.

As astrophotographers know, catching a fleet meteor with a single camera takes some luck. Catching one meteor with multiple cameras, some of them on platforms moving as fast as 17,000 mph, scattered from Earth to Earth orbit, sounds more like winning the lottery.

"Actually, we think the odds are fairly good," says Cooke, who estimates a 1 in 6 chance of a simultaneous catch between the ISS and one of the wide-field ground cameras.

If the effort does produce 3D imagery of any Lyrids, Cooke plans to use the photos to test ideas and algorithms for processing date gathered by future space-based meteor observatories. "We're laying the groundwork for small satellites that might one day be used to monitor meteor showers from Earth orbit," he explains.

Cooke encourages sky watchers everywhere be alert for meteors this Saturday night. Typical Lyrids are about as bright as the stars of the Big Dipper, so they're good for beginners. And it's not unusual to see one or two fireballs when the shower peaks. A good time to look is during the hours after midnight, when the shower's radiant is rising toward its zenith.

Although the Lyrid meteor rate is usually capped at 20 per hour, better displays sometimes occur when Earth glides through an unusually dense clump of debris. In 1982, for instance, astronomers counted as many as 90 Lyrids per hour.

"Such an outburst would be great for our experiment," says Cooke.

Amateur astronomers who wish to help monitor the 2012 Lyrids are encouraged to download the Meteor Counter for iPhones. The app records meteor counts and reports the data to NASA for possible analysis.

Also, Cooke and colleagues will be "staying up all night" on April 21st to chat with the general public about the shower. Tune in here

Related Links
-
Asteroid and Comet Impact Danger To Earth - News and Science




.
.
Get Our Free Newsletters Via Email
...
Buy Advertising Editorial Enquiries




.

. Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle



DEEP IMPACT
Encounters of another kind: meteorite chunk falls on Oslo
Oslo (AFP) March 12, 2012
A Norwegian family was flabbergasted to find that what appeared to be a piece of a meteorite had crashed through the roof of their allotment garden hut in the middle of Oslo, media reported Monday. The rock weighing 585 grammes (one pound, four ounces), which split in two, probably detached from a meteorite observed over Norway on March 1, experts said, and had landed on the empty hut in the ... read more


DEEP IMPACT
Lockheed Martin Completes Key Milestone on GeoEye's New Commercial Earth-Imaging Satellite

NASA Satellite Movie Shows Great Plains Tornado Outbreak from Space

FCC drops Google 'Street View' investigation

Envisat services interrupted

DEEP IMPACT
GPS could aid in earthquake warnings

Russia to Test Second Glonass-K Satellite in 2013

Lockheed Martin and Raytheon Complete Major GPS Integration Milestone

New Technology Tracks Sparrow Migration for First Time from California to Alaska

DEEP IMPACT
Eight native Mexicans shot dead defending forest

DMCii's detailed satellite imagery helps Brazil stamp out deforestation as it happens

UCSB Study Shows Forest Insects and Diseases Arrive in U.S. Via Imported Plants

Russia decodes ancient dawn redwood DNA

DEEP IMPACT
ORNL process improves catalytic rate of enzymes by 3,000 percent

Hot new manufacturing tool: A temperature-controlled microbe

Policies, learning-by-doing played important role in reducing ethanol costs

Hawaii plans biorefinery

DEEP IMPACT
Surplus Supply of Polysilicon Pressures Pricing - but not all Polysilicon Prices are Equal

EMCORE Awarded Solar Panel Manufacturing Contract

New Program Expands Ability to Tap into City's Abundant Sunshine

Hanwha Solar Deepens Roots in North America

DEEP IMPACT
British engineering firm creates 1,000 wind farm jobs

Cape Wind picks contractors for wind farm

Reducing cash bite of wind power

GDF SUEZ, VINCI, CDC Infrastructure and AREVA mobilized for offshore wind power

DEEP IMPACT
Buy coal? New analysis shows purchasing fossil fuel deposits best way to fight climate change

At least 15 dead in two China mine floods

Coal India faces government pressure

China's Chalco to buy stake in Mongolian firm

DEEP IMPACT
Dalai Lama laments latest Tibetan self-immolations

Angry villagers kill policeman in China riot

'We are the serfs': Chinese debate Bo Xilai saga

Hong Kong's next leader to ban mainland babies


Memory Foam Mattress Review

Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

.

The content herein, unless otherwise known to be public domain, are Copyright 1995-2012 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement