< ISS034-E-29105 >

Browse image
Resolutions offered for this image:
1000 x 640 pixels 540 x 346 pixels 1440 x 960 pixels 720 x 480 pixels 4256 x 2832 pixels 640 x 426 pixels
Cloud masks available for this image:
Binary Heatmap

Spacecraft nadir point: 18.8° S, 130.7° E

Photo center point: 17.4° S, 128.4° E

Photo center point by machine learning:

Nadir to Photo Center: Northwest

Spacecraft Altitude: 219 nautical miles (406km)
Click for a map
Width Height Annotated Cropped Purpose Links
1000 pixels 640 pixels No Yes Earth From Space collection Download Image
540 pixels 346 pixels Yes Yes Earth From Space collection Download Image
1440 pixels 960 pixels No Yes NASA's Earth Observatory web site Download Image
720 pixels 480 pixels Yes Yes Download Image
4256 pixels 2832 pixels No No Download Image
640 pixels 426 pixels No No Download Image
Other options available:
Download Packaged File
Download a Google Earth KML for this Image
View photo footprint information
No GeoTIFF is available for this photo.
Image Caption: Piccaninny Impact Structure, Western Australia

Note: This caption refers to the image versions labeled "NASA's Earth Observatory web site".

The whole world tuned into meteor impacts after the spectacular February 15, 2013 event over Russia's Ural Mountains near Chelyabinsk. The Chelyabinsk meteor exploded while entering the atmosphere, but impact craters document locations where meteors survive transit through the Earth's atmosphere and crash onto the surface. While some meteor impact locations on the Earth's surface are readily recognizable from orbit as distinct circular structures - such as Barringer Crater in Arizona - most are harder to recognize due to erosion, subsequent tectonic alteration of the landscape, or human land use that obscures the feature (such as urban or agricultural development). In cases where only the eroded remnants of a potential impact crater have been recognized, the terms "impact structure" or "astrobleme" are used. Such is the case for the Piccaninny Impact Structure, located in northern Western Australia and featured in this astronaut photograph from the International Space Station (ISS). It is the first confirmed image of the impact structure taken from the ISS.

The Piccaninny structure is located within the semi-arid Purnululu National Park and World Heritage site, and is thought to have been formed less than 360 million years ago. Specifically, the 7.5 km diameter structure forms a roughly circular plateau (image left, approximate extent marked by the white ellipse) within the striking sandstone cone towers of the Bungle Bungle Range, visible here as the dark gray-brown regions adjacent to the impact structure. Geological evidence indicating an impact structure includes regional folding and faulting patterns both within and surrounding the plateau. Features confirming an impact, such as shock textures (indicating rapid compression, melting, and fracturing during impact) in rocks and minerals have not yet been found; this is perhaps due to removal during erosion of an original crater.

Surface soils of the sparsely vegetated valley adjacent to the Bungle Bungle Range appear a reddish brown at image right. More abundant green vegetation is recognizable in riparian areas along major stream and river channels, such as the Ord River (image right).