Following one year of gravitational data collection, the European Space Agency’s GOCE satellite has produced what the ESA says is the most accurate model of the Earth’s geoid ever produced. A geoid is ...

(Phys.org)—Researchers from the University of Zurich say that atomic clock technology has sufficiently progressed to the point that it should now be feasible to use them to measure the Earth's geoid, ...

Have you ever thought to use a clock to identify mineral deposits or concealed water resources within the Earth? Some scientists are convinced that ultraprecise portable atomic clocks will make this a ...

Somewhere south of India, the ocean surface dips by roughly 100 meters below the expected shape of the Earth, a gravitational ...

[UPDATE (April 5, 2011): It turns out some of the descriptions I used below to describe a geoid were not accurate. I refer you to this page at the University of Oklahoma for a good description. I’ve ...

The Earth’s geoid is the shape the planet would assume if its surface were made of water. Naturally, there’s little dispute over the shape of the geoid over the oceans, where it varies by only 100 ...

When we’re told about newly released satellite images of our Earth, we imagine beautiful swathes of green and blue with the occasional white of swirling storm clouds or snow-topped mountain ranges.

Bottom line: There's a well-known "hole" in Earth's gravity field just off India's coastline, known as the Indian Ocean Geoid Low (IOGL). A new study is providing a potential explanation for this ...