Credit & Copyright: University of Chicago
Explanation:
David N. Schramm effectively combined the very big with the very small.
Among his many scientific achievements,
Schramm and collaborators successfully used
Big Bang cosmology to
predict that only three families of elementary particles exist in the universe,
which was subsequently confirmed by
high energy particle accelerators.
Schramm and collaborators realized that
current relative elemental abundance measurements,
when combined with nuclear reaction rates,
constrain the amount of normal matter to be much
less than that implied by the movements of stars and galaxies.
Therefore, most of the universe might be made of some sort
of dark matter.
Schramm was a champion wrestler, a mountain climber,
an inspiration to scientists and students,
and was alone piloting a plane when it crashed last Friday.
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 |
Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Publikacii s klyuchevymi slovami:
Bol'shoi Vzryv - temnoe veshestvo - elementarnye chasticy
Publikacii so slovami: Bol'shoi Vzryv - temnoe veshestvo - elementarnye chasticy | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> | |
