At large 'superbolide' re-entry, it can produce thud explosions so-called sonic bang. They are due to the speed of the object (a phenomenon similar to a jet that pass the sound barrier). The meteoroid breaks up, each piece makes a noise that all can be heard as a roaring thunder. Many observers have also heard tell of whistles produced by the phenomena called electrophonic.Recordings are rare evidence, here are some ......
The most obvious opportunity to study atmospheric re-entries is at planned events, such as entry of spacecraft! (Hey they are not stupid our scientists ;-)In these time, scientists team are created, like for the Stardust and Hayabusa spacecraft, to film, analyze, spectrographie the event. NASA chartered his DC-8 aircraft "DC-8 Airborne Laboratory" to follow it from the air.
Whenever in the news a fireball have been seen in the sky, bloggers, journalists and some funny guy stand out false images of meteors to illustrate their points.It's the time to put some order in this chao. ;-)
Our advezrtisers have so many idears to sell their products!And curiously meteors and meteorites make buying, especially when the commercials are filmed in an ultra real way, for our viewing pleasure.But, in real life, it remains extremely unlikely ...