Up? NASA astronaut Nichole Ayers has shared an incredible image of a sprite, a rare weather phenomenon that's triggered high above the clouds by "intense electrical activity in the thunderstorms below ...

NASA astronaut Nichole Ayers captured a sprite from the space station while orbiting above Mexico and the United States. Sprites are a rare atmospheric phenomenon that occurs because of intense ...

A balance sheet shows a company's assets, liabilities, and shareholder equity at that point in time. Learn how they work, how to read one, and why they're important.