Credit & Copyright: D. Roddy
(LPI)
Explanation:
What happens when a
meteor hits the ground?
Usually nothing much, as most
meteors are small, and indentations they make are soon eroded away.
49,000 years ago, however, a large meteor created
Barringer Meteor Crater in Arizona,
pictured above.
Barringer
is over a kilometer across.
In 1920, it was the first feature on Earth to be recognized as an
impact crater. Today, over 100
terrestrial impact craters have been identified.
Recent computer modeling now indicates how some of the
Canyon Diablo impactor melted during the impact
that created Barringer.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Публикации с ключевыми словами:
Earth - impact crater - метеорит - метеоритная опасность - Аризонский метеоритный кратер - кратер
Публикации со словами: Earth - impact crater - метеорит - метеоритная опасность - Аризонский метеоритный кратер - кратер | |
См. также:
Все публикации на ту же тему >> |