If cleaning garbage and waste on earth was proving to be difficult, an even challenging scenario of clearing junk from space has scientists in a tizzy. Space junk are usually debris of rockets that are discarded in the course of missions. Scientists estimate there are about 29,000 objects larger than 10cm orbiting Earth at average speeds of 25,000km/h, about 40 times faster than normal airplane speed. To address this issue, the European Space Agency launched the ‘Clean Space Initiative’ in 2012.