Archive for Meteorite

Nasa: On Aug. 13, 2015, the network reported 381 Meteoritic fireballs

Posted in 2015, astronomy, Galaxy with tags , , , on August 14, 2015 by MARIE EMMANUELLE QUILICHINI

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fireball_data

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA’s Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth’s atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point–Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

http://www.spaceweather.com/

Mystery Antarctic ‘Crater’ Could Be House-Sized Meteor Blast

Posted in 2015, astronomy with tags , , on January 12, 2015 by MARIE EMMANUELLE QUILICHINI

 

meteorite_crater

Scientists conducting a routine aerial research flight above East Antarctica noticed a strange ring-like structure in the normally flat and featureless ice.

It appeared to be a series of broken ‘icebergs’ surrounded by a 2km (1.24 miles) wide circular scar, surrounded by a few other smaller circular scars in the ice.

German scientists from the Alfred Wegener Institute on a routine survey flight spotted the 2km (1.24 mile) wide crater (main picture) in the ice shelf off the Princess Ragnhild Coast of East Antarctica, which can be seen in the north east corner of the continent in the inset map.

The location matched those of a meteorite spotted by Australian scientists at the Davis Research Station off the eastern coast of Antarctica in 2004. Low frequency sound detected in 2004 around the world also suggested a 7-10 metre wide meteorite exploded Antarctica and rained down debris onto the ice
Read more: http://www.dailymail.co.uk/sciencetech/article-2906488/Mystery-mile-wide-ring-Antarctica-Enormous-scar-crater-house-sized-meteorite-hit-Earth-2004.html#ixzz3OdwXeSMi

Every day, more than 40 tonnes of meteoroids hit our planet, with larger chunks of comet debris becoming fireballs

Posted in 2014 with tags , , , , , , , , , on May 22, 2014 by MARIE EMMANUELLE QUILICHINI

skymap-activity

Click to enlarge

The blue map tracks their position in the skies over our planet with the main showers highlighted in white circles

skymap-velocity

Click to enlarge

A second radar map looks at meteoroid speed. The red regions indicate a speed of 7.5 miles/s (12km/s), the green from 26 miles/s (42km/s) and the blue from 41 miles/s (66km/s)

Maps produced using the space agency’s Asgard program which tracks an estimated 4,000-5,000 meteoroids a day

WHICH ROCK IS WHICH?

An asteroid is a large chunk of rock left over from collisions or the early solar system.

Most are located between Mars and Jupiter in the Main Belt.

A comet is a rock covered in ice, methane and other compounds. Their orbits take them much further out of the solar system.

A meteor is what we call a flash of light in the atmosphere when debris burns up.

This debris itself is known as a meteoroid. Most are so small they are vapourised in the atmosphere.

If any of this meteoroid makes it to Earth, it is called a meteorite

Meteors, meteoroids and meteorites normally originate from asteroids and comets.

Diamonds Found In Meteorite

Posted in 2013 with tags , , , , , on September 13, 2013 by MARIE EMMANUELLE QUILICHINI
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