AJAX : REAL TIME SATELLITE TRACKING

  The main page utilizes AJAX (Asynchronous JavaScript And XML)

Yes you can but not all of them are visible. There are certain factors that make satellites being brighter of fainter. They shold be above the horizon and in a favorable position (illuminated by Sun while you should be in the dark). The brightness of a satellite is a function of its size, surface reflectivity, how well and from what angle the Sun's light is illuminating the satellite, the satellite's height above the horizon, and the corresponding effects of atmospheric interference. On average, a dozen or so satellites are visible at any given time to an observer using binoculars.

A low Earth orbit (LEO) is an orbit around Earth between the atmosphere and the Van Allen radiation belt, with a low angle of inclination. The boundaries are not firmly defined but are typically around 200 - 1200 km (124 - 726 miles) above the Earth's surface.

A high inclination orbit (80-100 degrees) will take a satellite over the polar regions so that it covers the whole Earth's surface, as the Earth rotates below it.