“2012 UK meteoroid”的意思、由来-开放百科全书

The 2012 UK meteoroid was an object that entered the atmosphere above the United Kingdom on Friday, 21 September 2012, around 11pm. Many news agencies across the UK reported this event.^[1]^[2]^[3]^[4]^[5]

Overview

Several theories were made as to the origin of the sightings - from it being a meteoroid to a UFO. Initially, the most prominent theory was that it was an old artificial satellite (i.e. a large piece of space junk) re-entering the atmosphere.^[6]^[7]^[8] However, later analysis showed that it was highly unlikely to be space junk; it travelled too fast, towards the slow end of the range of possible meteor speeds^[9] and, in addition, it traversed the sky from east to west while almost all satellites orbit from west to east or north and south.^[10]

According to Finnish mathematician Esko Lyytinen, the meteor was captured by Earth's gravity and entered the atmosphere once again above USA and Canada 155 minutes later.^[11] If confirmed, this would classify it as an Earth-grazing meteor.

See also

References

1. ^{{cite web |url=https://www.bbc.co.uk/news/uk-19683687 |title='Meteors' sighted in skies across UK |date=22 September 2012 |publisher=BBC News | archiveurl=https://web.archive.org/web/20120923102054/http://www.bbc.co.uk/news/uk-19683687 | archivedate=2012-09-23 | deadurl=no }}
2. ^{{cite web |url=https://www.bbc.co.uk/news/uk-scotland-19685161 |title='Meteor' sightings across Scotland prompt 999 calls |date=22 September 2012 |publisher=BBC News | archiveurl=https://web.archive.org/web/20120922184435/http://www.bbc.co.uk/news/uk-scotland-19685161 | archivedate=2012-09-22 | deadurl=no }}
3. ^{{cite web |url=http://www.thesun.co.uk/sol/homepage/news/4551821/Mystery-meteor-shower-burns-brightly-in-night-sky-over-UK.html |title=Mystery ‘meteor shower’ burns brightly in night sky over UK |date=23 September 2012 |publisher=The Sun }}
4. ^{{cite web |url=http://news.sky.com/story/988172/meteor-fireball-lights-up-sky-across-uk |title=Meteor 'Fireball' Lights Up Sky Across UK |date=22 September 2012 |publisher=Sky News | archiveurl=https://web.archive.org/web/20120925045610/http://news.sky.com/story/988172/meteor-fireball-lights-up-sky-across-uk | archivedate=2012-09-25 | deadurl=no }}
5. ^{{cite web |url=https://www.mirror.co.uk/news/uk-news/meteor-mania-huge-comet-spotted-1337427 |title=Meteor mania: Watch VIDEO of huge comet spotted over north west England |date=22 September 2012 |publisher=The Mirror | archiveurl=https://web.archive.org/web/20120922020045/http://www.mirror.co.uk/news/uk-news/meteor-mania-huge-comet-spotted-1337427 | archivedate=2012-09-22 | deadurl=no }}
6. ^{{cite web |url=http://www.dailymail.co.uk/news/article-2207180/Huge-fireballs-shoot-night-sky-spectacular-meteor-shower---turns-probably-space-junk-falling-Earth.html?ito=feeds-newsxml |title=Huge fireballs shoot across night sky in spectacular 'meteor' shower ... but turns out it was probably space junk falling back to Earth |date=22 September 2012 |publisher=The Daily Mail |archiveurl=https://wayback.archive-it.org/all/20120923035839/http://www.dailymail.co.uk/news/article-2207180/Huge-fireballs-shoot-night-sky-spectacular-meteor-shower---turns-probably-space-junk-falling-Earth.html |archivedate=2012-09-23 |deadurl=no |access-date=2012-09-27 |df= }}
7. ^{{cite web |url=http://www.thestar.co.uk/news/fireball-in-sky-above-sheffield-believed-to-be-space-junk-1-4957584 |title=Fireball in sky above Sheffield believed to be ‘space junk’ |date= 27 September 2012 |publisher=The Star | archiveurl=https://web.archive.org/web/20121014175839/http://www.thestar.co.uk/news/fireball-in-sky-above-sheffield-believed-to-be-space-junk-1-4957584 | archivedate=2012-10-14 | deadurl=no }}
8. ^{{cite web |url=https://www.bbc.co.uk/news/uk-northern-ireland-19683728 |title='Meteor shower' over Northern Ireland 'space junk' |date=22 September 2012 |publisher=BBC News | archiveurl=https://web.archive.org/web/20120923235849/http://www.bbc.co.uk/news/uk-northern-ireland-19683728 | archivedate=2012-09-23 | deadurl=no }}
9. ^{{cite web |url=http://sattrackcam.blogspot.nl/2012/09/more-on-21-september-2012-fireball-why.html |title=More on the 21 September 2012 fireball: why it definitely was a meteor |date=24 September 2012 | archiveurl=https://web.archive.org/web/20120927171349/http://sattrackcam.blogspot.nl/2012/09/more-on-21-september-2012-fireball-why.html | archivedate=2012-09-27 | deadurl=no }}
10. ^{{cite web |url=http://sattrackcam.blogspot.nl/2012/09/fireball-over-n-europe-on-21-september.html |title=Fireball over N-Europe on 21 September 2012, 21:45 GMT was likely NOT a reentry |date=22 September 2012 | archiveurl=https://web.archive.org/web/20120925233007/http://sattrackcam.blogspot.nl/2012/09/fireball-over-n-europe-on-21-september.html | archivedate=2012-09-25 | deadurl=no }}
11. ^{{cite web |url=http://lunarmeteoritehunters.blogspot.fi/2012/09/breaking-news-uk-earth-hugging-asteroid.html |title=Breaking News - UK Earth-hugging Asteroid Circled the Earth and Hit Again |date=28 September 2012 |author=Esko Lyytinen |publisher=LunarMeteorite Hunter | archiveurl=https://web.archive.org/web/20130512182307/http://lunarmeteoritehunters.blogspot.fi/2012/09/breaking-news-uk-earth-hugging-asteroid.html | archivedate=2013-05-12 | deadurl=no }}

12. Phil Williams (January 2015) "The Meteoric Earth-Grazing Fireball of September 2012" Liverpool Astronomical Society Monthly Newsletter (January 2015, pp. 5–9)