Explanation: Over the course of billions of years, whole clusters of galaxies merge. Above is an X-ray image of Abell 2142, the result of the collision of two huge clusters of galaxies, and one of the most massive objects known in the universe. This false-color image shows a concentration of gas 50 million degrees hot near the center of the resulting cluster. Oddly, it is the relative coldness of the gas that makes this situation particularly interesting. The center of Abell 2142 is surrounded by gas fully twice as hot, a temperature thought to have been created by energy released during the colossal collision. Still, since we can only see a snapshot in time, much remains unknown about how clusters of galaxies form and coalesce.
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:
cluster of galaxies - Скопление галактик - рентгеновское излучение
Публикации со словами: cluster of galaxies - Скопление галактик - рентгеновское излучение | |
См. также:
Все публикации на ту же тему >> |