Often in these weekly Night Sky columns I refer to the magnitude of a star or planet. The concept of magnitude is relatively easy to grasp. Put simply, magnitude indicates an object’s degree of ...

Add Yahoo as a preferred source to see more of our stories on Google. The 4.8 magnitude earthquake that struck New Jersey on Friday generated shaking that could be felt from Washington, D.C., to north ...

PITTSBURGH (KDKA) - In scientific fields, numbers are everywhere. Knowing what those numbers mean is easier to understand in some cases, and in other cases, not so much. An earthquake's magnitude, on ...

Earthquakes and seismic activity often happen with sudden movements underground with tectonic plates. Seismographs are used by scientists to measure the time, location and strength of an earthquake.

The earthquake that rattled Californians on Friday night measured a 7.1 magnitude, which doesn’t sound much worse than the 6.4-magnitude quake that struck a day earlier. But it was. The small ...

THE destructive power of earthquakes is measured in different ways, but the one most people have heard of is the Richter scale. Here’s how the force is calculated – and what it means if you are caught ...

Earthquakes are becoming increasingly frequent. On Sunday morning, four earthquakes struck parts of India, Myanmar, and Tajikistan within just one hour, sending tremors across central and South Asia.

The moment magnitude scale (MMS; denoted explicitly with Mw or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on ...