Meteorites Can Be Threat To Humans

Meteorites Can Be Threat To Humans Meteors to Earth in size big enough is a rare occurrence, but the possibility of a meteorite on the settlement will increase as the population memadatnya. Another threat comes from the increasing amount of space junk space junk in the form of satellites.
The meteorite that hit a house like that happened on Thursday (04/29/2010) in dense settlements in Villages Malakasari, Duren Sawit, East Jakarta, according to records of the National Aeronautics and Space Agency (Lapan), is the first time this has happened in Indonesia.
During this time, meteorites, meteorite to the surface of the Earth and the fall in uninhabited areas. Last seven years, Lapan reported that there were several instances meteorites in the territory of Indonesia, among others, located on the edge of the woods near Pontianak, West Kalimantan (2003), in an open field in Tegal; and rice cultivation areas in Gianyar, Bali (2008).
The latter is a meteor that fell in Bone, South Sulawesi, in October 2009. Approximately 10 meters in diameter meteor that crashed in waters near the Gulf of Bone was a huge explosion in the air, and seen by many eyewitnesses.
Since the year 1908, Indonesia's land area is known ever fall 17 relatively large-sized meteor.The earliest occurrence is a meteor weighing 1.63 kilograms found in Kangean island, Sumenep, East Java, 27 November 1908. The heaviest meteor found in Jumapolo, East Java, March 13, 1984, weighing 32.49 kg.
The fall of celestial bodies
Each month the real surface of the Earth is hit by a meteorite fall. However, many of which are unknown to humans because the meteorite fell in the ocean, forests, swamps and other open areas. Meteorite that fell in parts of Indonesia could occur two to three years. Opportunities fell on the ground was small because most areas of the ocean.
The size of the meteorite that reached Earth's surface is very small, in the form of flakes and sand. Space object had entered the atmosphere at speeds of about 100 000 kilometers per hour. He will usually be eroded by the relatively dense air mass in Earth's atmosphere. As a result, the meteorite will begin to burn with a temperature hundreds of degrees Celsius to resemble a fireball at an altitude of 100 km from the surface of the Earth.
"Therefore, when I got here on Earth, the meteorite had shattered the form of flakes," says Thomas Djamaluddin, an expert in astronomy and astrophysics from Lapan.
Because of the very high heat, melt the outside of the meteorite would be to leave the blackened material in the Earth's surface.
Meteorites usually contain nickel and other metals. As a form of rock composed of carbon and silicates. "Material from the sky did not contain radioactive substances or radiated," said Thomas.
Meteor
Meteors, asteroids or star is the remnant that had been destroyed or the remnants of the interplanetary solar system formation. Currently residing in the Earth's solar system, the Sun ran into an object space, the meteor would be attracted by the gravity of the Earth up into the atmosphere.
Until now, there has been no monitoring system that is able to detect meteors the size of less than 10 yards, let alone a meteor that his movement is very sporadic and random.
In contrast to the fall of space junk, predictable meteor showers each month. Meteor shower of sand-sized grains from a comet constellation dust remaining.
In addition Lyrid meteor shower last month, residents of Earth will see the meteor shower early this May and among them Leonid meteors in November. This year there will be a total of 11 times the major meteor showers.
Space Dust
Are scattered around Earth space rocks with various sizes of sand-sized to relatively larger. The number reached more than 25,000 tons.
This material does not include space junk caused by human activity itself. Trash was a wreck satellites no longer active. According to Lapan data, the amount of space junk is more than 15,000 units.
Special to trash this satellite, the Agency for the United States Aeronautics and Space Administration (NASA) has issued a catalog for each satellite used to being around the Earth.Catalog also provides satellite owners and potential hazards into the atmosphere. Unfortunately, the catalog only lists the garbage the size above 10 meters.
Fall of space junk is another threat for Indonesia. Possible fall-satellite fragments circulating in the vicinity of the equator, because Indonesia is categorized as a large area extending up one eighth of the equator. It was announced by Head of Center for Utilization of Space Science National Aeronautics and Space Agency of Sri kaloka.
Just like a meteor, although the form of pieces of space junk, it will be shot with a very high speed while falling to the surface of the Earth and could hit residential areas or other important objects.
To anticipate this, Lapan observing the object and take action on security before the incident, for example by closing the highway and liberate the area that will hit the object.
In the future, the opportunity space junk falling on Earth will be increasingly larger. Until January 27 years ago, the number of chips there is 7789 (size above 10 cm), satellite functioning and not functioning numbered 3338, as well as 1820 rocket body. In total, there were 12 947 units.