Earth GLOBAL CLIMATE CHANGE from JPL Your planet is changing. We're on it. Our planet is changing. Through the gradual build-up of more greenhouse gases in the atmosphere, Earth is warming. Click here to see how your planet is changing. EARTH IMAGES from the JPL Photojournal NASA Spacecraft Sees Stark Effects of California Drought on Agriculture Stark effects of a California drought on agriculture can be seen clearly in these two February images acquired by NASA's Landsat 8 in 2014 (left) and NASA's Terra spacecraft in 2003 (right). Read more | | More Earth images Explore Earth satellites in 3D "Eyes on the Earth" is a 3-D visualization experience that lets users "fly along" with NASA's fleet of Earth science missions and observe climate data from a global perspective in an immersive, real-time environment. View interactive Earth Observing Missions Active Cavity Irradiance Monitor Satellite Monitors total sun energy that reaches Earth. › Instrument home page
Geographic.org home page - Geography, climate, countries, Maps, Flags, Population Earth From Space Earth From Space PBS Airdate: February 13, 2013 NARRATOR: Our planet: Earth—you may think you know it well, but a startling new picture is emerging of a world shaped by forces more dynamic and intertwined than we ever imagined, raising possibilities that defy common sense. How can sandstorms in the Sahara Desert transform the Amazon rainforest, over 5,000 miles away? In the frigid ocean beneath Antarctica, how can a vast undersea waterfall, 500 times bigger than Niagara Falls, lead to a gigantic feeding frenzy near the equator? And how can warm water, streaming past the coast of Africa, trigger a weather catastrophe, half a world away, in the southern United States? Scientists have begun to find surprising answers to these and other profound questions, thanks to a network of satellites, orbiting high above the earth. EMILY SHUCKBURGH ( British Antarctic Survey): It’s really the last bastion of human discovery. NARRATOR: What are these hidden forces that rule our world?
Volcanic hazards could become fiercer and more frequent - physic The erupting Icelandic volcano that wrought havoc on European air traffic may have calmed for now, but geologists are warning that volcanic hazards such as this could become more commonplace due to climate change. They believe there is evidence that melting ice is placing an increasing strain on volcanic regions across the globe, which could trigger a range of different geological hazards. These findings appear in a special issue of Philosophical Transactions of the Royal Society A. Perhaps the most topical paper is research led by Freysteinn Sigmundsson at the University of Iceland, which looks specifically at volcanic activity in Iceland. A fiery land Sigmundsson's team has developed a model of how Icelandic volcanism might respond to the removal of ice mass. Sigmundsson and his team suspect that a sudden removal of pressure, due to melting glaciers, could lead to additional upwelling in the Earth's mantle. The plume may reappear Unprepared for the hazard
Extreme Weather Photo Contest Winners | Precipitation Measurement Missions Thank you to everyone who submitted photos to the first installment of our GPM Extreme Weather Photo Competition. We loved all of your entries and thoroughly appreciate your participation! The GPM Photo Competition Committee is happy to announce our top 5 picks. Ormond Shelf, by Jason Weingart Date and Location: May 15, 2012 Ormond Beach, Florida How this Photo Was Taken: “I'm a photography student at the University of Central Florida. I have shot many storms from the same spot this photo was taken, and I almost drove by to get a different vantage point, but something told me to just stop at my spot. The storm actually pushed back on shore as it moved south, and then became strong enough for tornado warnings on three separate occasions. Fun Fact: A shelf cloud is a type of arcus cloud with a wedge shape. About Photographer Jason Weingart: Thunderstorm, by Grant Petty Date and Location: May 22, 2011 Dane County, Wisconsin The storm cell dropped 1-3/4 inch hail near Sun Prairie.
Introduction to Earth Sciences I Introduction to Earth Sciences I Topic 1 The Earth's Macroscopic Properties and What They Can Tell Us To get some very basic descriptions of the Earth we will start by describing some of the simplest of all the Earth's properties - how big, how heavy, how hot, how strong - and how they were deduced. 1.1 The Earth's Size and Shape Centuries ago people had very little idea about the total size of the Earth and hardly any notion of its shape. One of the earliest attempts to estimate the Earth's size was done by Eratosthenes about 200 B.C. If the Earth were flat the "sun angle" would be the same everywhere. If the Earth is round then the "sun angle" would change and he reasoned that the amount of sun angle change had to have something to do with the Earth's total size. Because of this he knew about angles. From there he could get the circumference of the Earth which he estimated at 24,500 miles, only about 50 miles off current best estimate. Mini-Quiz: Forward and Inverse Thinking . 1.3.1.
Earth Day from Space There are many ways to celebrate Earth Day, from sustainability efforts (and check out our new blog, Guilty Planet) to simply appreciating nature. And while this is a beautiful shot of Forest Park right here in Portland, it doesn’t compare — in my eyes — to the perfection of Earth as seen from so far away. In October of 1946, a V-2 missile was launched from New Mexico, straight up into the air. It wasn’t until Apollo 8, 22 years later, that the first color photograph of Earth was taken. And now, in the 21st Century, we’ve got a myriad of satellites, shuttles, spacecraft and rockets to choose from if we want to photograph the Earth. The IMAGE satellite captured the Aurora Australis over the southern hemisphere after a record-setting Solar Flare in 2005 (and movies are available here). While, on the other side of the Earth, the United States’ Space Shuttle photographed this shot of the Aurora Borealis in 2007. That’s us, folks.
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Total Lunar Eclipse This Weekend—Last One Until 2014 This weekend sky-watchers across most of the globe will have the chance to watch at least some of the last total lunar eclipse until 2014. The entire lunar eclipse will be visible in East Asia, Australia, and the far western portion of North America that includes Alaska and Canada's Yukon and Northwest Territories. The spectacle will last nearly three and a half hours, starting on Saturday at 4:45 a.m. Pacific Time. Totality—when the full moon will be completely blocked from direct sunlight—will start at 6:05 a.m. PT and last until 6:57 a.m. Part of the eclipse will be visible in Europe and Africa at moonrise, in the evening, said Raminder Singh Samra, an astronomer at the H.R. "Meanwhile, observers across the Pacific region of North America will get to see the sky show low in the western horizon at moonset, in the early morning," he said.
Moving slabs [This Dynamic Earth, USGS] The layer of the Earth we live on is broken into a dozen or so rigid slabs (called tectonic plates by geologists) that are moving relative to one another. "Historical perspective" Orbiting Earth 101: What You’d See / What You’d Do “I saw for the first time the earth’s shape. I could easily see the shores of continents, islands, great rivers, folds of the terrain, large bodies of water. The horizon is dark blue, smoothly turning to black. . . the feelings which filled me I can express with one word–joy.” -Yuri Gagarin It takes a tremendous amount of energy to do any type of heavy lifting, and the most extreme example of this is lifting something all the way up off of the Earth, out of the atmosphere, and into space! And once you’re up there, at least 300 km above the Earth’s surface, the sights you’ve got are bound to be absolutely amazing! But gravity is a funny thing. But while the Moon is 384,000 km away from the center of the Earth and takes about four weeks to orbit the Earth, these man-made satellites and space vehicles, at an altitude of around 300 km, are only 6,700 km away from the center of the Earth. Image credit: Boeing. But let’s take a look at the Earth itself.
Judge Who Vacationed With Massey CEO Now Running For Congress | By GottaLaff See that photo? That's Massey Energy's Don Blankenship living it up on the French Riviera with his buddy, his pal, his good ol' boy "Spike". And who is this Spike we speak of? Why, he's none other than former State Supreme Court judge Elliot "Spike" Maynard who is all about pallin' around with the coal industry. And now he's running for a seat in Congress against a Democrat. Don'tcha just love when friends help friends? These aren't the best of days for Don Blankenship, whose systematic downplaying of safety concerns as the CEO of Massey Energy helped lead to last week's deadly mining disaster, and got him named the "seventh scariest person in America." Spike the Friend will be facing off against Rep. And just for good measure, Spike the Friend has accused Washington Democrats of "declaring war on the coal industry." You can read the rest here. Categories : Uncategorized