Saturday, 23 March 2019

NASA's Terra Satelite detects huge fireball meteor over Bering Sea.

The Multi-angle Imaging SpectroRadiometer (MISR) ad Moderate-Resolution Imaging Spectroradiometer (MODIS) systems on the Terra (EOS AM) captured an image of a huge fireball over the Bering Sea (which separates Alaska from Russia) on 19 December last year, according to data released by NASA this week. The object was seen to explode about 26 kilometres above the sea, releasing roughly the same amount of energy as 173 kilotonnes of TNT (an explosion. about 10 times as powerful as the Hiroshima bomb), suggesting an object about 18 m in diameter, the largest such object known to have entered the atmosphere since the Chelyabinsk Meteor in February 2013.

Animation made up of successive MISR images of the 18 December 2018 meteor. The meteor is the yellowish object in the lower centre of the screen, the longer, darker object above is its shadow on the cloud tops. NASA/Godard Space Flight Center/Langley Research Center/Jet Propulsion Laboratory/California Institute of Technology.

Objects of this size probably enter the Earth's atmosphere several times a century, though unless they do so over populated areas they are unlikely to be noticed. They are officially described as fireballs if they produce a light brighter than the planet Venus. The brightness of a meteor is caused by friction with the Earth's atmosphere, which is typically far greater than that caused by simple falling, due to the initial trajectory of the object. Such objects typically eventually explode in an airburst called by the friction, causing them to vanish as an luminous object. However this is not the end of the story as such explosions result in the production of a number of smaller objects, which fall to the ground under the influence of gravity (which does not cause the luminescence associated with friction-induced heating).
 
These 'dark objects' do not continue along the path of the original bolide, but neither do they fall directly to the ground, but rather follow a course determined by the atmospheric currents (winds) through which the objects pass. Scientists are able to calculate potential trajectories for hypothetical dark objects derived from meteors using data from weather monitoring services. On this occasion any such objects are likely to have fallen into the Bering Sea, making it highly unlikely they will be recovered.
 
See also...
 
http://sciencythoughts.blogspot.com/2019/03/investigating-meteoroid-impact-on-moon.htmlhttps://sciencythoughts.blogspot.com/2019/03/looking-for-asteroids-in-2018-la-like.html
http://sciencythoughts.blogspot.com/2019/03/fireball-over-united-arab-emirates.htmlhttp://sciencythoughts.blogspot.com/2019/03/looking-for-source-of-heavy-nitrogen-in.html
https://sciencythoughts.blogspot.com/2019/02/fireball-meteor-over-colorado.htmlhttps://sciencythoughts.blogspot.com/2019/02/meteorites-fall-on-cuban-town-after.html
Follow Sciency Thoughts on Facebook.

3 comments:

  1. ASS..WR.WB.SAYA PAK RESKY TKI BRUNAY DARUSALAM INGIN BERTERIMA KASIH BANYAK KEPADA EYANG WORO MANGGOLO,YANG SUDAH MEMBANTU ORANG TUA SAYA KARNA SELAMA INI ORANG TUA SAYA SEDANG TERLILIT HUTANG YANG BANYAK,BERKAT BANTUAN EYANG SEKARAN ORANG TUA SAYA SUDAH BISA MELUNASI SEMUA HUTAN2NYA,DAN SAWAH YANG DULUNYA SEMPAT DI GADAIKAN SEKARAN ALHAMDULILLAH SUDAH BISA DI TEBUS KEMBALI,ITU SEMUA ATAS BANTUAN EYANG WORO MANGGOLO MEMBERIKAN ANGKA RITUALNYA KEPADA KAMI DAN TIDAK DI SANGKA SANGKA TERNYATA BERHASIL,BAGI ANDA YANG INGIN DIBANTU SAMA SEPERTI KAMI SILAHKAN HUBUNGI NO HP EYANG WORO MANGGOLO (0823-9177-2208) JANGAN ANDA RAGU ANGKA RITUAL EYANG WORO MANGGOLO SELALU TEPAT DAN TERBUKTI INI BUKAN REKAYASA SAYA SUDAH MEMBUKTIKAN NYA TERIMAH KASIH
    NO HP EYANG WORO MANGGOLO (0823-9177-2208)
    BUTUH ANGKA GHOIB HASIL RTUAL EYANG WORO MANGGOLO
    DIJAMIN TIDAK MENGECEWAKAN ANDA APAPUN ANDA MINTA INSYA ALLAH PASTI DIKABULKAN BERGAUNLAH SECEPATNYA BERSAMA KAMI JANGAN SAMPAI ANDA MENYESAL

    angka;GHOIB: singapura
    angka;GHOIB: hongkong
    angka;GHOIB; malaysia
    angka;GHOIB; toto magnum
    angka”GHOIB; laos…
    angka”GHOIB; macau
    angka”GHOIB; sidney
    angka”GHOIB: vietnam
    angka”GHOIB: korea
    angka”GHOIB: brunei
    angka”GHOIB: china
    angka”GHOIB: thailand

    ReplyDelete
  2. Are You In Need Of A Private Or Business Loans At 2% Rate For Various
    Purposes? If Yes; Contact us: collinsguzmanfundings@gmail.com/WhatsApp: +1 (786) 598-8751


    *Full Name:_________

    *Address:_________

    *Tell:_________

    *loan amount:_________

    *Loan duration:_________

    *Country:_________

    *Purpose of loan:_________

    *Monthly Income:__________

    *Occupation__________

    *Next of kin:_________

    *Email :_________

    Thanks and best regards
    Mr Collins Guzman

    ReplyDelete
  3. Hi everyone, Are you into trading or just wish to give it a try, please becareful on the platform you choose to invest on and the manager you choose to manage your account because that’s where failure starts from be wise. After reading so much comment i had to give trading tips a try, I have to come to the conclusion that binary options pays massively but the masses has refused to show us the right way to earn That’s why I have to give trading tips the accolades because they have been so helpful to traders . For a free masterclass strategy kindly contact maryshea03@gmail.com for a free masterclass strategy. She'll give you a free tutors on how you can earn and recover your losses in trading for free..

    ReplyDelete