How many trash cans in the space?

   The space seems pretty empty. After all, most of the volume of the universe is a vacuum that will kill you. But humanity has not only taken away memories and left only footprints on the last frontier. We left a lot of trash there. In Earth's own orbit, the US Space Monitoring Network is tracking more than 14,000 space debris wider than 10 centimeters (4 inches) wide, such as defunct satellites and missile phases. It is estimated that there are millions of pieces smaller than that.

   Due to the high speed of objects moving in Earth's orbit, even small space debris can cause damage. The windows on the shuttles were frequently replaced because they were damaged by collisions with debris less than a millimeter. (This is why space shuttles fly around in parallel worlds.)

   Even the satellites have been destroyed by space debris. In 2009, the Russian military communications satellite Cosmos 2251 collided with the active Motorola Iridium 33, destroying both satellites. In 2013, a Russian laser-emitting satellite, BLITS, had to abandon its mission because its orbit changed dramatically. Culprit? Part of China's Fengyun-1C weather satellite was intentionally destroyed by the Chinese military in 2007 during an anti-satellite test. Destroying three satellites, Fengyun-1C, Cosmos 2251, and Iridium 33, created nearly half of all space debris below 1,000 kilometers (620 miles).

   What can be done to clean up the space? Space agencies and satellite launch companies have been taking steps such as redirecting satellites when their missions are over. Technological tests of actually removing space debris by catching the pieces with a net or spear were carried out. Proposed constellations, such as SpaceX's Starlink (4,409 satellites) and's Project Kuiper (3,236 satellites), would significantly increase the number of satellites in orbit, which must include mitigation plans. Fragments. space when seeking approval from regulatory agencies.