BBCNEWS BBC News October 14, 2021 20:50:00
And theyre the same colour as the walrus. weve been taking images of the earth from space for more than 60 years, but our view has changed dramatically. in the 1980s, satellites could only see subjects 30 metres in size. but they quickly improved, and a few years later, they could see features ten metres across. today, though, the most advanced imaging satellites can see details down to just 30 centimetres, and this has transformed our view of the natural world. the sea ice on which they live mo...
Source: archive.org