How Does Gravity Work In The Vacuum Of Space? | The New Frontier | Spark

We know it's there, and we usually pay it little mind. Gravity is the all-encompassing force keeping us on the ground, and the planets in their orbits, yet we notice it when it's not there. In space we are merely cheating gravity; falling just as fast but missing the ground; an orbit and the so-called condition of microgravity. Now this fundamental universal force is slowly giving up its secrets.

The Ionosphere is the interface between Earth and space, a region of rarified gas and charged particles. It is very important for radio communications, radar, satellite signals and global positioning. Yet we know so little about it significantly when it disrupts all these signals in a regular fashion. Too high for planes or balloons, it's up to satellites to study this rarified region.

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