Tornadoes plague the central and eastern sections of the contiguous United States far more than the western portion. That much is obvious from this map showing 56 years of tornado tracks, from 1950 through 2006. This map breaks down tornadoes by strength based on the Fujita scale. Stronger tornadoes appear as brighter lines. (An enhanced Fujita […]
Every month or so, NASA Earth Observatory will offer up a puzzling satellite image here on Earth Matters. The first one is above. Your challenge is to use the comments section below to tell us what part of the world we’re looking at, when the image was acquired, and what’s happening in the scene. How to answer. […]
Here at the Earth Observatory, we sift through a constant stream of data and imagery that flows in from a range of satellite, airborne, and ground-based sensors. As a result, the images we share on our website really run the gamut. Many are true-color images that look like what your naked eye would see if […]
Here at the Earth Observatory we know as well as anybody that explaining the nuance and complexity of climate modeling isn’t easy. In May, Nature Climate Change published a study pointing out that the number of news articles that mention climate change has been declining since 2007. There was a slight increase in mentions following […]
The Earth Observatory image of the day for June 5 shows flooding in Botswana’s Savuti River and Savuti Swamp. The abundant water turns out to be a very small part of a much bigger picture. The Savuti Swamp sits within the Kalahari Desert, which stretches across Namibia, Angola, Zambia, South Africa, and most of Botswana. More […]
From the Landsat team at NASA and the U.S. Geological Survey… To celebrate the 40th anniversary of the Landsat Earth-observing program — which first rocketed into space on July 23, 1972 — NASA and the U.S. Geological Survey will be giving something special to members of the American public. NASA will create customized Landsat chronicles […]
Paleozoic, Mesozoic, and Cenozoic. These are the major eras in the history of life on Earth, and the transition from one period to another has been marked by a major turnover in fossils — one assemblage of organisms going extinct and being replaced by another. Today paleontologists agree that the biggest extinction in the fossil […]
In case you missed it, NASA is sponsoring a video contest starring your home planet. The winner will receive behind-the-scenes access to the launch of NASA’s next major Earth-observing satellite — the Landsat Data Continuity Mission (LDCM) — from Vandenberg Air Force Base in January 2013. Most of the public tends to focus on NASA’s […]
We recently posted an image of a dust storm in the Middle East (see below) that prompted one of our Facebook followers to ask why the dust is thicker near the left part of the image than the right. He wondered if the layer of dust is usually thickest near the origin of dust storms. […]
The past few weeks have been rough on Earth-observing satellites. But there was some good news and some engineering prowess to go along with the troubles.
