Curiosity rover

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Curiosity
Mars 'Curiosity' Rover, Spacecraft Assembly Facility, Pasadena, California (2011).jpg
Organization: NASA
International team
Major contractors:
Mission type: Rover
Launch date: November 26, 2011 (2011-11-26) 15:02:00.211 UTC (10:02 EST)
Launch vehicle: Atlas V 541 (AV-028)
Launch site: Cape Canaveral LC-41
Mission duration: 668 Martian sols
23 Earth months
NSSDC ID: 2011-070A
Webpage: Mars Science Laboratory
Mass: 900 kg (2,000 lb)
Power: MMRTG
Planet: Mars
Landing: August 6, 2012, 05:17:57 UTC SCET[1]
MSD 49269 05:50:16 AMT
edit
The Curiosity rover landed on August 6, 2012 about 10 kilometres (6.2 mi) from the base of Aeolis Mons (or Mount Sharp)

The Curiosity rover is a robotic car-sized Mars rover. It is currently exploring Gale Crater, which is near the equator of Mars. The rover is a nuclear-powered robot that is part of NASA's Mars Science Laboratory (MSL).

The MSL mission has four main scientific goals: study Martian climate and geology, search for water, and find out whether Mars could have ever supported life. Curiosity carries the most advanced scientific equipment ever used on the surface of Mars.

Curiosity is the fourth NASA surface rover sent to Mars in 16 years. Curiosity is also the heaviest robotic wheeled vehicle (at 900 kg) to have ever landed on Mars (The Soviet Union's Lunokhod 2 lunar rover (1973) used to be the largest with 840 kg). Curiosity was launched from Cape Canaveral on November 26, 2011 at 10:02 EST. It successfully landed on Aeolis Palus in Gale Crater on Mars on August 6, 2012, 05:17:57 UTC.

Goals[change | change source]

The main scientific goals of the MSL mission is to search whether Mars could ever have supported life or water and to study the climate and geology of Mars. The Curiosity rover has six main scientific objectives:

  1. Search for minerals found on the crater surface and near-surface geological materials.[2]
  2. Detect signs of life
  3. Study the many processes that have formed and changed rocks and soils.
  4. Study the atmosphere of Mars
  5. Observe the movement and cycles of water and carbon dioxide.
  6. Characterize the surface radiation, including galactic radiation, cosmic radiation, solar proton events and secondary neutrons.

Landing site[change | change source]

The original landing site for Curiosity.

The rover's landing was planned for a small region of Aeolis Palus within Gale crater. Gale crater is an approximately 2 billion-year-old impact crater on Mars that was filled with sediments by water and wind. Later, wind erosion removed all sediments, leaving a 5.5 km (3.4 mile) high mountain (Mount Sharp).

The crater is 154 km (94 mi) wide. The crater was chosen because it may allow for the study of two billion years of Martian history. The landing site is also near an alluvial fan. The alluvial fan is believed to be the result of a flow of ground water.

Coverage and popular culture[change | change source]

NASA collected more than 1.2 million names from people who sent their names from 2009 to 2011. Their names are on a microchip which is located on the deck of Curiosity.

Live videos showing the first footage from the surface of Mars was available at NASA TV. It was shown live during the night of August 5, 2012. The NASA website became unavailable because of the large number of people visiting it.

A 13-minute NASA video of the landing, on YouTube, also became unavailable for several hours. A robotic DMCA notice was sent from Scripps Local News who prevented access. Around 1,000 people gathered in New York City's Times Square, to watch NASA's live broadcast of Curiosity's landing.

Geology[change | change source]

The Curiosity rover has three scoops which can dig up the soil on Mars so it can be studied. These scoops are kept clean by using Martian sand as an abrasive cleaner.[2] Soil samples are studied inside Curiosity using a chemistry and mineralogy instrument called CheMin. CheMin uses X-ray diffraction to discover what minerals are in the soil samples.[2] This information is then sent back to Earth.

References[change | change source]

  1. "MSL Sol 3 Update". NASA Television. August 8, 2012. http://www.youtube.com/watch?v=6f8HHQ2U2jg. Retrieved August 9, 2012.
  2. 2.0 2.1 2.2 Matson, John (October 23, 2012). "Curiosity Rover Takes a Bite out of Mars". Scientific American Gallery. http://www.scientificamerican.com/gallery_directory.cfm?photo_id=C62A6B47-F4C5-E69B-A0619BDE5BFEC6AE&WT.mc_id=SA_CAT_SPC_20121025. Retrieved November 6, 2012.

Other websites[change | change source]