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"Krsna says: tesam satatam yuktanam. Anyone who is sincerely engaged in My service I give him the intelligence. Krsna is the most intelligent. So if He gives the intelligence who can compete with you?"
Bienvenido a mi rinconcito en la red. Me interesa expresar mi opinión acerca de: los libros que estoy leyendo, cuales son mis pasatiempos, los lugares que visito en la red y la información que encuentro, y todo aquello que trato de hacer por cambiar lo único que puedo, mi forma de pensar y ver la vida Todo aquel que quiera comentar es bienvenido. Rama
Image Credit: Don Davis/NASA
Using updated information, NASA scientists have recalculated the path of a large asteroid. The refined path indicates a significantly reduced likelihood of a hazardous encounter with Earth in 2036.
The Apophis asteroid is approximately the size of two-and-a-half football fields. The new data were documented by near-Earth object scientists Steve Chesley and Paul Chodas at NASA's Jet Propulsion Laboratory in Pasadena, Calif. They will present their updated findings at a meeting of the American Astronomical Society's Division for Planetary Sciences in Puerto Rico on Oct. 8.
"Apophis has been one of those celestial bodies that has captured the public's interest since it was discovered in 2004," said Chesley. "Updated computational techniques and newly available data indicate the probability of an Earth encounter on April 13, 2036, for Apophis has dropped from one-in-45,000 to about four-in-a million."
A majority of the data that enabled the updated orbit of Apophis came from observations Dave Tholen and collaborators at the University of Hawaii's Institute for Astronomy in Manoa made. Tholen pored over hundreds of previously unreleased images of the night sky made with the University of Hawaii's 88-inch telescope, located near the summit of Mauna Kea.
Tholen made improved measurements of the asteroid's position in the images, enabling him to provide Chesley and Chodas with new data sets more precise than previous measures for Apophis. Measurements from the Steward Observatory's 90-inch Bok telescope on Kitt Peak in Arizona and the Arecibo Observatory on the island of Puerto Rico also were used in Chesley's calculations.
The information provided a more accurate glimpse of Apophis' orbit well into the latter part of this century. Among the findings is another close encounter by the asteroid with Earth in 2068 with chance of impact currently at approximately three-in-a-million. As with earlier orbital estimates where Earth impacts in 2029 and 2036 could not initially be ruled out due to the need for additional data, it is expected that the 2068 encounter will diminish in probability as more information about Apophis is acquired.
Initially, Apophis was thought to have a 2.7 percent chance of impacting Earth in 2029. Additional observations of the asteriod ruled out any possibility of an impact in 2029. However, the asteroid is expected to make a record-setting — but harmless — close approach to Earth on Friday, April 13, 2029, when it comes no closer than 18,300 miles above Earth's surface.
"The refined orbital determination further reinforces that Apophis is an asteroid we can look to as an opportunity for exciting science and not something that should be feared," said Don Yeomans, manager of the Near-Earth Object Program Office at JPL. "The public can follow along as we continue to study Apophis and other near-Earth objects by visiting us on our AsteroidWatch Web site and by following us on the @AsteroidWatch Twitter feed."
The science of predicting asteroid orbits is based on a physical model of the solar system which includes the gravitational influence of the sun, moon, other planets and the three largest asteroids.
NASA detects and tracks asteroids and comets passing close to Earth using both ground and space-based telescopes. The Near Earth-Object Observations Program, commonly called "Spaceguard," discovers these objects, characterizes a subset of them and plots their orbits to determine if any could be potentially hazardous to our planet.
JPL manages the Near-Earth Object Program Office for NASA's Science Mission Directorate in Washington. Cornell University operates the Arecibo Observatory under a cooperative agreement with the National Science Foundation in Arlington, Va.
For more information about asteroids and near-Earth objects, visit: http://www.jpl.nasa.gov/asteroidwatch
- courtesy of: NASA Headquarters; Jet Propulsion Laboratory.
Cierro Cita
Fr. Pierre de Bethune reflects on the witness of Saint Francis of Assisi toward other religions. This excerpt is taken from his article "Christian-Buddhist Dialogue as Spiritual Experience," which appeared in Bulletin 52, (January, 1995).
The image of Saint Francis, painted during his lifetime (1181/82-1226), is from the Sacro Speco at Subiaco, where Saint Benedict lived as a hermit in the fifth century.
As long as our meeting with others is limited to a search for profit, albeit spiritual, a true encounter is not possible, because it is not so much the person of the other believer that we encounter, but his/her riches, received as "things." However, at this point if we consent to go further with our companions on the Buddhist way, we are gradually brought to a change of attitude. We realize that this meeting in depth brings about a real impoverishment. There are the various roads which converge towards this evangelical beatitude. In experiencing other religious traditions we discover other images and names for the Absolute. We see how the spirit is equally at work, and this discovery can help to liberate us from our possessiveness in this domain.
Here St. Francis of Assisi enlightens our path. His biographer, Thomas of Celano, sites the practice of the Poverello to treat sacred texts with great respect, even those from secular authors. A brother asked him one day why he so carefully collected the writings even of the pagans, where the Name of the Savior was not present. He answered: "My son, it is because we find in them the letters that spell out the glorious Name of Our Lord God. All that is good in these writings belongs neither to the pagans nor to anyone else, but to God alone, from whom we receive every good." A particular good does not belong to us. We do not possess the truth. Then we can "rejoice in the truth" that we find in others and purify ourselves of an exaggerated attachment to our truths of the faith.
Magnitude | 7.6 |
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Date-Time |
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Location | 0.789°S, 99.961°E |
Depth | 80 km (49.7 miles) set by location program |
Region | SOUTHERN SUMATRA, INDONESIA |
Distances | 45 km (30 miles) WNW of Padang, Sumatra, Indonesia 220 km (135 miles) SW of Pekanbaru, Sumatra, Indonesia 475 km (295 miles) SSW of KUALA LUMPUR, Malaysia 960 km (590 miles) NW of JAKARTA, Java, Indonesia |
Location Uncertainty | horizontal +/- 8.9 km (5.5 miles); depth fixed by location program |
Parameters | NST= 42, Nph= 42, Dmin=521.5 km, Rmss=1.28 sec, Gp= 47°, M-type=teleseismic moment magnitude (Mw), Version=8 |
Source |
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Event ID | us2009mebz |
The magnitude 7.6 southern Sumatra earthquake of September 30, 2009 occurred as a result of oblique-thrust faulting near the subduction interface plate boundary between the Australian and Sunda plates. At the location of this earthquake, the Australian Plate moves northeast with respect to the Sunda plate at a velocity of approximately 65 mm/yr.
On the basis of the currently available fault mechanism information and earthquake depth of 80 km, it is likely that this earthquake occurred within the subducting Australian Plate rather than on the plate interface itself. The recent earthquake was deeper than typical subduction thrust earthquakes that generally occur at depths less than 50 km.
The subduction zone surrounding the immediate region of this event has not witnessed a megathrust earthquake in the recent past, rupturing last in an earthquake of M 8.5 or larger in 1797. Approximately 350 km to the south, a 250 km section of the plate boundary slipped during an Mw 8.4 earthquake in September 2007, while approximately 300 km to the north, a 350 km section slipped during the Mw 8.7 earthquake of March 2005. In early 2008, the plate boundary updip of today’s earthquake was active in a sequence of Mw 5-6 earthquakes. It is not clear how today’s earthquake is related to the sequence of megathrust subduction zone events on the shallower section of the plate boundary.
Earthquake Information for Asia
Earthquake Information for Indonesia
Tsunami Information
The earthquake locations and magnitudes cited in these NOAA tsunami bulletins are very preliminary and may be superceded by USGS locations and magnitudes computed using more extensive data sets.