Tiny ground movements that occur too gradually to be seen by the human eye can nevertheless be detected by ESA satellites looking down to Earth from 800 km away.
Read more:
http://www.esa.int/export/esaCP/SEM913VZJND_index_0.html
Tiny ground movements that occur too gradually to be seen by the human eye can nevertheless be detected by ESA satellites looking down to Earth from 800 km away.
Read more:
http://www.esa.int/export/esaCP/SEM913VZJND_index_0.html