European Space Agency Flickr Update

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Central District, Botswana
03-03-2017 06:54 PM CET

europeanspaceagency posted a photo:

Central District, Botswana

Sentinel-2A takes us over part of Botswana’s Central District in this false-colour image captured on 22 March 2016.

Rivers and roads cut through the landscape, while the bright, circular areas represent villages where the vegetation has been cleared away. Areas of thicker vegetation appear red, such as in the fields or along the bottom of the image in the Tswapong Hills south of the Lotsane River.

On the river we can see a large reservoir with a dam at its eastern end. Completed in 2012, this dam was built to provide drinking water to the local people and irrigate some 250 hectares for a horticultural project. Last month, the dam nearly reached its capacity following seasonal downpours.

The multispectral instrument on the Sentinel-2A satellite can provide measurements of sediment and chlorophyll content of the water and detect changes, and can therefore support the sustainable management of water resources.

The circular structure in the upper-right corner of the image is a crater formed when a meteorite hit Earth up to 180 million years ago. It measures about 3.4 km across.

Sentinel-2 is a two-satellite mission for Europe’s Copernicus environment monitoring programme. The first satellite, Sentinel-2A, has been in orbit since June 2015, and its twin, Sentinel-2B, is set for launch on 7 March.

Follow the launch via live webstream through our website at www.esa.int/sentinel2 or join in the conversation by using the #Sentinel2Go hashtag on Twitter.

This image is also featured on the Earth from Space video programme.

Credit: contains modified Copernicus Sentinel data (2016), processed by ESA

Worcester crater in context
03-03-2017 10:05 AM CET

europeanspaceagency posted a photo:

Worcester crater in context

This context image shows a region of Mars where Kasei Vallis empties into the vast Chryse Planitia. The region outlined by the large white box indicates the area imaged during Mars Express orbit 15714, with the smaller inner box highlighted in an associated image release. In this context image, north is up.

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Credit: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO

Anaglyph view at the mouth of Kasei Vallis
03-03-2017 10:03 AM CET

europeanspaceagency posted a photo:

Anaglyph view at the mouth of Kasei Vallis

This anaglyph view, showing a portion of terrain at the mouth of Kasei Vallis, provides a 3D view of the landscape when viewed using red–green or red–blue glasses.

The image is based on data acquired by the nadir channel and one stereo channel of the High Resolution Stereo Camera on Mars Express on 25 May 2016 during orbit 15714. The image is centred on 309ºE/27ºN and the ground resolution is about 15 m per pixel. North is to the right.

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Credit: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO

Perspective view toward Worcester crater
03-03-2017 10:01 AM CET

europeanspaceagency posted a photo:

Perspective view toward Worcester crater

This perspective view looks from an unnamed crater at bottom right towards a 25 km-wide crater named Worcester Crater. The region sits at the mouth of Kasei Valles, where fierce floodwaters emptied into Chryse Planitia.

The image was generated using data from the high-resolution stereo camera on ESA’s Mars Express. This scene is part of the region imaged on 25 May 2016 during orbit 15714. The main image is centred on 309ºE/27ºN and the ground resolution is about 15 m per pixel. The view is looking approximately to the south.

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Credit: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO

Topography at the mouth of Kasei Valles
03-03-2017 09:59 AM CET

europeanspaceagency posted a photo:

Topography at the mouth of Kasei Valles

The colour-coded topographic view shows relative heights and depths of terrain in the region of Mars where Kasei Vallis reaches Chryse Planitia. As indicated in the key at top right, whites and reds represent the highest terrain, while blue is the lowest.

The image is based on a digital terrain model of the region, from which the topography of the landscape can be derived.

This region was imaged by the High Resolution Stereo Camera on ESA’s Mars Express on 25 May 2016 during orbit 15714. The image is centred on 309ºE/27ºN and the ground resolution is about 15 m per pixel. North is to the right.

More information

Credit: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO

At the mouth of Kasei Valles
03-03-2017 09:56 AM CET

europeanspaceagency posted a photo:

At the mouth of Kasei Valles

This image focuses on the mouth of Kasei Valles, as it transitions into Chryse Planitia. The region experienced extreme flooding billions of years ago, which has left its mark in this scene, as described in the associated image release.

The region was imaged by the High Resolution Stereo Camera on ESA’s Mars Express on 25 May 2016 during orbit 15714. The image is centred on 309ºE/27ºN and the ground resolution is about 15 m per pixel. It was created using data from the nadir channel, the field of view which is aligned perpendicular to the surface of Mars, and the camera’s colour channels. North is to the right.

More information

Credit: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO

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