What can you see from space? Ed Lu, the science officer from Expedition Seven aboard the International Space Station, states that people can see an awful lot from space: ocean, desert, forest, glaciers, ; even things as small as a road, harbor and ships. And with rapid development of better sensors and remote sensing techniques, people have access to ever more information through the remote sensing images including monitoring forests. Today, scientists are developing an index to assess the healthiness, density and size of forests in Indonesia.