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Re: Earth from Space - beautiful images [Re: Mona - Astronomy] #928366 06/13/18 12:33 AM
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Is the white ash and the white border the lava?

Re: Earth from Space - beautiful images [Re: Mona - Astronomy] #928368 06/13/18 03:36 AM
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Angie, I can't help on that one. I'm not much good at interpreting these Earth photos. The satellite images come with an explanation, but when the astronauts take pictures from the space station, we don't get that.


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Re: Earth from Space - beautiful images [Re: Mona - Astronomy] #929199 07/28/18 12:54 PM
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It's a true-color image taken over Sharm El Sheikh, Egypt. Sharm is at lower left, with the town of Nabq farther up the coast. Tiran and Sanafir Islands are centre and right. The Gulf of Aqaba at the top centre feeds into the Red Sea - home to some of the warmest and saltiest seawater in the world.

Image: Copernicus EU #Sentinel-2

Last edited by Mona - Astronomy; 01/06/20 08:23 PM.

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Re: Earth from Space - beautiful images [Re: Mona - Astronomy] #930835 04/13/19 10:37 PM
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This Copernicus EU #Sentinel-2 image shows Aorounga crater in Northern Chad (via VisioTerra) lying only 100 km away from the Emi Koussi volcano. Measuring about 12 km across, the crater was created by a meteorite impact about 340 million years ago.


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Re: Earth from Space - beautiful images [Re: Mona - Astronomy] #930873 04/24/19 07:09 AM
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From an altitude of 255 miles, an Expedition 59 crew member on the International Space Station photographed the Richat Structure, also known as the "Eye of the Sahara" in northwestern Mauritania.

The circular geologic feature is thought to be caused by an uplifted dome that has been eroded to expose the originally flat rock layers.


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Re: Earth from Space - beautiful images [Re: Mona - Astronomy] #931021 05/26/19 08:57 AM
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Captured on 14 April 2018 by the Copernicus EU #Sentinel-2A satellite, this image shows western Pakistan and an important wetland area. It shows a fragmented coast, part of the Indus River Delta. The Indus River, visible on the right, veers through the Sindh Province and is one of the longest rivers in the world, rising in Tibet and flowing around 3000 km before emptying into the Arabian Sea. The delta consists of creeks, swamps, marshes and the seventh largest mangrove forest in the world.


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Re: Earth from Space - beautiful images [Re: Mona - Astronomy] #931173 06/27/19 06:49 PM
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This isn't such a beautiful image for the people living there. While weather forecasts provide the temperature of the air, this map generated from the European Space Agency (ESA) Copernicus EU Sentinel-3 satellite data shows us how hot the land surface is. This is from yesterday, the 26th of June.
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The white areas in the image are where cloud obscured readings of land temperature and the light blue patches are snow-covered areas.

Countries worst hit by this unusual June weather include Spain, France, Germany, Italy and Poland. In many places heat warnings have been issued and cities such as Paris have connected fountains and sprinklers to hydrants to help give people some relief. Wildfires in Catalonia, said to be the worst in two decades, have already ripped across 5000 hectares of land and are being blamed on the heat and strong winds.



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Re: Earth from Space - beautiful images [Re: Mona - Astronomy] #931407 08/18/19 10:41 AM
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A false-colour image of the Gibson Desert in Western Australia captured by the ESA's Copernicus Sentinel-2A satellite on Christmas Day in 2015. The desert covers an area of over 150,000 sq km, and includes gravel terrains covered by deserts grass, also red sandy plains and dunefields.

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On the left side of this false-colour image we see many strange shapes in varying shades of blue. These are the remnants of areas purposefully burned by the Pintupi people to encourage plant growth or drive game animals into the open.

Many of the Pintupi people moved to settlements when the British military began testing missile in the region in the 1950s. The areas that they had burned became overgrown, becoming even more susceptible to manmade or lightning-caused fires, which then burn out of control, leaving behind large burn scars.

In the lower-right corner of the image we can make out a circular structure. This is the Connolly Basin impact crater, believed to have been formed around 60 million years ago. Some 9 km across, the rim rises 25-30 m above the crater's basin.


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Re: Earth from Space - beautiful images [Re: Mona - Astronomy] #932149 01/26/20 09:51 PM
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ESA presents a fascinating image that looks like a painting. But it's a Copernicus Sentinel-2 image that features an area in the Santa Cruz Department of Bolivia, where part of the tropical dry forest has been cleared for agricultural use. The region has been transformed from dense forest into a patterned expanse of agricultural land. This deforestation method, common in this part of Bolivia, is characterised by the radial patterns that can be seen clearly in the image.

Each patterned field is approximately 20 sq km and each side is around 2.5 km long. Small settlements can be seen in the centre of each individual field in the image, which typically contain a church, a school and a soccer field. These communities are joined by a road network depicted by the straight lines that bisect the radial fields and connect the adjacent areas.


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