âYou let your tour guide know how you much you enjoyed the experience they provided by your tip; 15% is average. Carriage Drivers: Similar to walking tours, when you pay $85 for a horse & buggy ride in St. Augustine, itâs hard to know how much to tip.
These objects are. launched into space and orbit Earth, or. another body in space, and carry instru-. ments for collecting information and. communicating it back to Earth. There are approximately 3,000 satellites operating. in Earth orbit, according to the US Government. There are another 8,000 dead satellites and rocket. parts in orbit. Smaller orbital debris or âspace junkâ. is of growing concern as it can damage active sat-. ellites. There are currently over 20,000 pieces of. trackable debris 3.6 inches (10cm) or larger result-. ing mostly from explosions and collisions.
GPS satellites are at 12,400 miles, high enough to be accessible to large swaths of the Earth. Others that need a closer look at Earth are lower. For comparison, the International Space Station is only about 260 miles high, and very few satellites are lower than that.bout 1,100 active satellites, both government and private. Plus there are about 2,600 ones that no longer work. Russia launched the first satellite, Sputnik 1, in 1957. The oldest one still in orbit, which is no longer functioning, was launched in 1958.