Explanation: What's the farthest galaxy known? The answer keeps changing as astronomers compete to find new galaxies which top the list. The new record holder is now the faint red smudge indicated in the above image by the arrow. Detected light left this galaxy billions of years ago, well before the Earth formed, when the universe was younger than 1/10th of its present age. Astronomers have measured a redshift of 5.34 for this galaxy, breaking the "5 barrier" for the first time. Young galaxies are of much interest to astronomers because many unanswered questions exist on when and how galaxies formed in the early universe. Although this galaxy's distance exceeds that of even the farthest known quasar, it is still in front of the pervasive glowing gas that is now seen as the cosmic microwave background radiation.
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:
early universe - далекие галактики - квазары - красное смещение - микроволновое фоновое излучение
Публикации со словами: early universe - далекие галактики - квазары - красное смещение - микроволновое фоновое излучение | |
См. также:
Все публикации на ту же тему >> |