This was the first satellite that NASA launched toward the South Pole in an attempt to put it in a polar orbit On Feb. 28, 1959, the U.S. Air Force launched a new spy satellite prototype called ...

Mashable is a global, multi-platform media and entertainment company.

Mashable is a global, multi-platform media and entertainment company.

The P/B ratio shows how a stock's market price compares to its book value. It helps gauge whether a stock is undervalued or overvalued relative to its net assets.