Beagle (crater)
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Beagle is a crater lying within the
Margaritifer Sinus quadrangle The Margaritifer Sinus quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Margaritifer Sinus quadrangle is also referred to as MC-19 (Mars Chart-19) ...
(MC-19) portion of the planet
Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin at ...
, the crater is one of multiple topographical depressions within the
Meridiani Planum The Meridiani Planum (alternately Meridiani plain, Meridiani plains, Terra Meridiani, or Terra Meridiani plains) is either a large plain straddling the equator of Mars and covered with a vast number of spherules containing a lot of iron oxide or ...
extraterrestrial plain, which was explored by the ''Opportunity'' rover. It was located by the rover in images taken on sol 855 (June 20, 2006), 310
metre The metre (British spelling) or meter (American spelling; see spelling differences) (from the French unit , from the Greek noun , "measure"), symbol m, is the primary unit of length in the International System of Units (SI), though its prefi ...
s (1,107 ft) away. It is on the edge of the much larger
ejecta blanket An ejecta blanket is a generally symmetrical apron of ejecta that surrounds an impact crater; it is layered thickly at the crater's rim and thin to discontinuous at the blanket's outer edge. The impact cratering is one of the basic surface format ...
surrounding the crater
Victoria Victoria most commonly refers to: * Victoria (Australia), a state of the Commonwealth of Australia * Victoria, British Columbia, provincial capital of British Columbia, Canada * Victoria (mythology), Roman goddess of Victory * Victoria, Seychelle ...
, named the Victoria Annulus. This impact crater was named in honor of HMA ''Beagle'' of the
Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against ...
, ordered in February 1817, which carried
Charles Darwin Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all species of life have descended ...
on his voyage round the world.


Missions

''Opportunity'' spent seven sols (Martian days) looking at the Beagle crater and the surrounding areas. Sol 872 (July 7, 2006): ''Opportunity'' used its panoramic camera for some targeted investigations this sol, then had a communication session with the ''
2001 Mars Odyssey ''2001 Mars Odyssey'' is a robotic spacecraft orbiting the planet Mars. The project was developed by NASA, and contracted out to Lockheed Martin, with an expected cost for the entire mission of US$297 million. Its mission is to use ...
'' orbiter. The rover also completed a miniature
Thermal Emission Spectrometer The Thermal Emission Spectrometer (TES) is an instrument on board Mars Global Surveyor. TES collects two types of data, hyperspectral thermal infrared data from 6 to 50 micrometres (μm) and bolometric visible-NIR (0.3 to 2.9 μm) measurements. T ...
sky and ground observation. Sol 873: An attempt to cross a ripple to the southeast (in order to head towards Beagle Crater) was prematurely halted because the rover appropriately determined that it was making too little progress over the ripple. The rover also did some dust monitoring with its panoramic camera mast assembly (the rover's "head" and "neck"), and conducted some morning atmospheric science, including a sky and ground observation with the miniature thermal emission spectrometer. ''Opportunity'' also did a calibration of that instrument on this sol. Sol 874: ''Opportunity'' used its panoramic camera to survey the ground, then took a picture with its navigation camera to determine where to point the miniature thermal emission spectrometer. The miniature thermal emission spectrometer was also used to observe the sky and ground. The panoramic camera took thumbnail images of the sky. Sol 875: The rover successfully backed away from the ripple that saw 80 percent slip on sol 873. ''Opportunity'' used its panoramic camera and miniature thermal emission spectrometer on a distant potential meteorite; those instruments also completed an observation of the sky and ground. Sol 876: The rover drove southwesterly towards the edge of a ripple about 15 meters (49 feet) away to evaluate whether the outcrop adjacent to the ripple is reachable, and whether there is a path from the outcrop towards Beagle Crater. The rover also searched for clouds with its navigation camera and observed the sky and ground with its miniature thermal emission spectrometer. Sol 877: ''Opportunity'' drove about 25 meters (82 feet) on an outcrop path towards Beagle Crater. The rover did a "quick find attitude" at the end of the drive, which updates its physical position. The rover supported a Mars Express overflight, and did remote sensing with its panoramic camera and miniature thermal emission spectrometer. Sol 878: The rover drove about 25 meters (82 feet) towards Beagle Crater. ''Opportunity'' performed elevation sky and ground surveys during the Mars Odyssey pass and miniature thermal emission spectrometer sky and ground stares in the morning. A panoramic camera survey in front of the rover will be conducted to help pick a soil target for this weekend's robotic arm activity.


See also

*
Geography of Mars Areography, also known as the geography of Mars, is a subfield of planetary science that entails the delineation and characterization of regions on Mars. Areography is mainly focused on what is called physical geography on Earth; that is the di ...
* List of craters on Mars


References


External links


Official Mars Rovers website

Martian crater Beagle
(panoramic image) {{Portal bar, Solar System Impact craters on Mars Margaritifer Sinus quadrangle