Does my equator look big in this?
Scales don\u2019t come planet-sized, so answering a question from David in Ghana may require some ingenuity, after all, calculating the weight of the Earth is a huge task.\nUsing a set of weighing scales and a 400 year-old equation, Marnie Chesterton attempts to find out just how much the Earth weighs and is it getting heavier or lighter over time?\nBut how would a planet gain or lose mass? Which tips the scales: meteorites falling from space or gases constantly escaping from our atmosphere? \nAnd does the answer have any implications for the future of Earth? Could the atmosphere eventually run out? \n \nContributors:\nAnuradha TK, former project director at ISRO\nMatt Genge, geologist at Imperial College London\nJon Larsen, researcher at the University of Oslo \nAnjali Tripathi, astrophysicist \nEthan Seigel, journalist and astrophysicist
Presented by Marnie Chesterton.\nProduced by Caroline Steel for the BBC World Service.
[Image: Earth on scales. Credit: Getty Images]