[iosif]

An asteroid exploded over Russia this week, June 21 2018.

A bright meteor was seen in near daylight on June 21, 2018 over several Russian cities, including Lipetsk, which is located southeast of Moscow. The fast fireball produced an amazing smoke trail that remained visible during several minutes. NASA’s fireball records indicate the event occurred on June 21 at 01:16:20 UTC. Sensors detected that the space rock produced an explosion equivalent to 2.8 kilotons. That explosion size corresponds to the disintegration of a small asteroid of about 13 feet (4 meters) in diameter. That size is in contrast to the estimated 65-foot (20-meter) asteroid that exploded in the air over Chelyabinsk, Russia in February 2015.

Infrasound sensors detectors registered the low frequencies produced by the explosion of the space rock as it entered Earth’s atmosphere.

Although intense friction with the air would have caused most of the space rock to disintegrate, it is possible that small fragments may have reached Earth’s surface.

https://vk.com/video-727032_456239749
https://www.youtube.com/watch?time_continue=49&v=xzmh_u-QH7k

Sursa. http://earthsky.org/space/asteroid-explode...-395104533
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[dmtr69]

Super! Cu o tara asa mare si cu multe camere active, au multe sanse de a prinde ceva interesant.

[iosif]

A bright meteor was seen in near daylight on June 21, 2018, over several Russian cities, including Lipetsk, which is located southeast of Moscow. There are also reports now of the meteor having been seen from Moscow itself. And now the first meteorite fragments are reportedly being found. The first to be found is about 1.18 inches (3 cm) across. Scientists from the Ural Federal University reported finding it near the town of Yelets. Search operations are still underway, as other fragments may be found in the area.

The small space rock found this week is a stony meteorite, whose properties will be studied in detail in a laboratory.

Sursa.
http://earthsky.org/