Marsu preti sudar s asteroidom u januaru 2008.
Autor: Tanjug | 21.12.2007 - 10:53


Prema istraživanju Laboratorije reaktivnog kretanja iz Pasadene (Kalifornija) 30. januara 2008. godine Marsu preti sudar s džinovskim asteroidom.

Stručnjaci američkog istraživačkog centra koji izučavaju nebeska tela bliža zemlji otkrili su asteroid u novembru prošle godine.

Prema rečima astronoma Stiva Čezlija asteroid se kreće u pravcu od Zemlje ka Marsu.

"Mi tačno znamo da će asteroid proleteti mimo Marsa a mogućnost sudara s Crvenom planetom sada iznosi jedan prema 75. Međutim ta veličina se smanjuje pri približavanju nebeskog tela Marsu. U početku je pad asteroida na Mars ocenjivan kao jedan prema 350", istakao je Čelzi, navodi agencija Itar Tass.

Ako asteroid padne na površinu Marsa, kako kažu stručnjaci, doći će do formiranja kratera veličine pola kilometra.

Veličina asteroida odgovara tunguškom meteoritu koji je pao u Sibiru 1908. godine. Jačina tog udara može se uporediti s eksplozijom atomske bombe snage 15 megatona.


Izvor: Blic

bice lose ako ga omasi 

Eto ti ga sad i asteroid! Mislis ako omasi Mars da ce pukne u nas?

Uuu ode mi postojbina po avataru 

pa ne znam ali ... 


Astronomers funded by NASA are monitoring the trajectory of an asteroid named 2007 WD5 that is expected to cross the orbital path of Mars early next year. Calculations by NASA's Near-Earth Object Office at the Jet Propulsion Laboratory indicate that the 164-ft wide asteroid may pass within 30,000 miles of Mars at about 6 a.m. EST on Jan. 30, 2008.

"Right now asteroid 2007 WD5 is about half-way between the Earth and Mars and closing the distance [to Mars] at a speed of about 27,900 miles per hour," said Don Yeomans, manager of the Near Earth Object Office at JPL.


 There is a 1-in-75 chance of 2007 WD5 hitting Mars; researchers can't be more confident than that because of uncertainties in the asteroid's orbit. If this unlikely event were to occur, however, the strike would happen somewhere within a broad swath across the planet north of where the Opportunity rover is.

"We estimate such impacts occur on Mars every thousand years or so," said Steve Chesley, a scientist at JPL. "If 2007 WD5 were to thump Mars on Jan. 30, we calculate it would hit at about 30,000 miles per hour and might create a crater more than half-a-mile wide." The Mars Rover Opportunity is currently exploring a crater approximately this size.



Such a collision could release about three megatons of energy. Scientists believe an event of comparable magnitude occurred here on Earth in 1908 in Tunguska, Siberia, but no crater was created. The object was disintegrated by Earth's atmosphere before it hit the ground, although the air blast devastated a large area of unpopulated forest. The Martian atmosphere is much thinner than Earth's so a similar sized impactor would be more likely to reach the ground.

Asteroid 2007 WD5 was first discovered on Nov. 20, 2007, by the NASA-funded Catalina Sky Survey and put on a "watch list" because its orbit passes near the Earth. Further observations from both the NASA-funded Spacewatch at Kitt Peak, Ariz., and the Magdalena Ridge Observatory in New Mexico gave scientists enough data to determine that the asteroid was not a danger to Earth, but could potentially impact Mars.

Because the asteroid has been tracked for little more than a month, there is still some uncertainly about the path it will take. "Over the next five weeks, we hope to gather more information from observatories so we can further refine the asteroid's trajectory," says Yeomans. More data could eliminate or confirm the possibility of an impact.

WASHINGTON - Astronomers funded by NASA are monitoring the trajectory of an asteroid estimated to be 50 meters (164 feet) wide that is expected to cross Mars' orbital path early next year. Observations provided by the astronomers and analyzed by NASA's Near-Earth Object Office at the Jet Propulsion Laboratory in Pasadena, Calif., indicate the object may pass within 30,000 miles of Mars at about 6 a.m. EST (3 a.m. PST) on Jan. 30, 2008.

"Right now asteroid 2007 WD5 is about half-way between Earth and Mars and closing the distance at a speed of about 27,900 miles per hour," said Don Yeomans, manager of the Near Earth Object Office at JPL. "Over the next five weeks, we hope to gather more information from observatories so we can further refine the asteroid's trajectory."

NASA detects and tracks asteroids and comets passing close to Earth. The Near Earth Object Observation Program, commonly called "Spaceguard," plots the orbits of these objects to determine if any could be potentially hazardous to our planet.

Asteroid 2007 WD5 was first discovered on Nov. 20, 2007, by the NASA-funded Catalina Sky Survey and put on a "watch list" because its orbit passes near Earth. Further observations from both the NASA-funded Spacewatch at Kitt Peak, Ariz., and the Magdalena Ridge Observatory in New Mexico gave scientists enough data to determine that the asteroid was not a danger to Earth, but could potentially impact Mars. This makes it a member of an interesting class of small objects that are both near Earth objects and "Mars crossers."


Because of current uncertainties about the asteroid's exact orbit, there is a 1-in-75 chance of 2007 WD5 impacting Mars. If this unlikely event were to occur, it would be somewhere within a broad swath across the planet north of where the Opportunity rover is located.

"We estimate such impacts occur on Mars every thousand years or so," said Steve Chesley, a scientist at JPL. "If 2007 WD5 were to thump Mars on Jan. 30, we calculate it would hit at about 30,000 miles per hour and might create a crater more than half-a-mile wide." The Mars Rover Opportunity is exploring a crater approximately this size right now.

Such a collision could release about three megatons of energy. Scientists believe an event of comparable magnitude occurred here on Earth in 1908 in Tunguska, Siberia, but no crater was created. The object was disintegrated by Earth's thicker atmosphere before it hit the ground, although the air blast devastated a large area of unpopulated forest.

NASA and its partners will continue to track asteroid 2007 WD5 and will provide an update in January when further information is available. For more information on the Near Earth Object program, visit: http://neo.jpl.nasa.gov/

Aha, nas je mimoisao za trunku, a Mars mozda i udari. Ok. Ako udari, Ameri ce imati sansu da snime to sa Oportunitija, pre nego sto se rasturi. Ako dodje do kolizije dici ce se velika kolicina crvene prasine - mozda cak cela planeta bude u oblaku.

ili ce imati da snime jos jedan film sa brus wilisom kao armagedon... 

u jbt a ako ga okrzne ima da ga pocepa ko pi*ku

Ni da pukne pravo u njega nece mu nista. Bice atmosfera crvena duze vremena od prasine, Amerima ce mozda stradati vozilo Oportunity i to je to. Ako vide da ce da udari u planetu, trebalo bi da iskoriste i da snime sto vise fotki i svih ostalih podataka (recimo jacina potresa i sl). Misle oni o tome vec, ne brinem se ja.
Ne moze asteroid od 50 m da pocepa planetu.