Originally posted by Blackmarketeer
This one isn't a specific discovery per se, but has led to many;
Satellite imagery - GIS, infrared, ground penetrating radar, etc.
Has led to many new sites in Egypt being discovered, as well as paleo-channels of the Nile, ancient lake beds in the Sahara, mapping of the ocean floors, sub-glacial mountain ranges in the Arctic, and at least 200 sunken cities discovered across the Mediterranean, not to mention the number of Mesoamerican sites found in the Amazon or the Guatemalan jungle that lay hidden beneath the forest cover.
Just some links to show how profound satellite imagery has been in the field of archeology;
Google Archeology: Satellite Imagery is Helping Us Discover the Past
Lost Pyramids: Peering Beneath Egypt's Surface With Satellite Images
17 Lost Pyramids Discovered Using Infrared Satellite Imaging
A blog dedicated to Satellite imaging discoveries: satellitediscoveries.typepad.com
Archaeologist Uses Satellite Imagery To Explore Ancient Mexico
Space Archeologists Discover a Thousand Egyptian Tombs Hidden in Tanis
Satellites spot lost Guatemala Mayan temples
There's literally thousands of such headlines.
Very much yes, probably need to expand the part on dating techniques and add 'detection' technology

