Landsat 9, which is ready to be launched on Monday, will be the ninth and most advanced satellite to study Earth from above for the Landsat program, a joint effort by NASA and the U.S. Geological Survey that has provided constant imagery of our planet for nearly 50 years.It should orbit the Earth at altitude of about 438 miles (705 kilometers) over the planet’s poles. and will be able to image the entire Earth every 16 days. In fact, because Landsat 8 is still in use, working together the two satellites can cover the entire Earth every eight days.”For nearly 50 years, Landsat satellites have documented Earth’s changing landscape,” Michael Egan, NASA’s Landsat program manager, said in the press conference.
The Landsat program helped specialists to have fresh data especially as the planet experiences more extreme weather, powerful storms, fires and other effects from climate change. The cost of Landsat 9 was $750 million. The satellite was initially supposed to launch on Sept. 16, but was delayed to Sept. 23 due to a liquid nitrogen shortage related to the ongoing COVID-19 pandemic. High winds prompted another delay to Sept. 27. Weather forecasts predict a 60% chance of good conditions at launch time. A backup launch window is available on Tuesday, if needed.