On This Day

Mars Odyssey is launched

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...

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 spectrometers and a thermal imager to detect evidence of past or present water and ice, as well as study the planet's geology and radiation environment. The data Odyssey obtains is intended to help answer the question of whether life once existed on Mars and create a risk-assessment of the radiation that future astronauts on Mars might experience. It also acts as a relay for communications between the Curiosity rover, and previously the Mars Exploration Rovers and Phoenix lander, to Earth. The mission was named as a tribute to Arthur C.

Historical Significance

2001 Mars Odyssey is a robotic spacecraft orbiting the planet Mars.

Events Before

  1. Gisborne, New Zealand, with a population of approximately 32,754, is the first city in the world to welcome the new Mill

    Gisborne, New Zealand, with a population of approximately 32,754, is the first city in the world to welcome the new Millennium

  2. Microsoft chairman Bill Gates steps aside as chief executive and appoints company president Steve Ballmer as his success

    Microsoft chairman Bill Gates steps aside as chief executive and appoints company president Steve Ballmer as his successor

  3. NASDAQ Composite stock market index peaks at 5132.52, signaling the beginning of the end of the dot-com boom

    NASDAQ Composite stock market index peaks at 5132.52, signaling the beginning of the end of the dot-com boom

  4. South African cricket captain Hansie Cronje is charged by Delhi police with fixing One Day International matches against

    South African cricket captain Hansie Cronje is charged by Delhi police with fixing One Day International matches against India

  5. Metallica files a lawsuit against the peer-to-peer sharing platform Napster, accelerating a movement against file-sharin

    Metallica files a lawsuit against the peer-to-peer sharing platform Napster, accelerating a movement against file-sharing programs

Events After

  1. Euro banknotes and coins become legal tender in twelve of the European Union's member states

    There are eight denominations of euro coins, ranging from one cent to two euro (the euro is divided into a hundred cents). The coins first came into use in 2002.

  2. 29th American Music Awards: Janet Jackson and Lenny Kravitz win. Michael Jackson receives Artist of the Century award.

    29th American Music Awards: Janet Jackson and Lenny Kravitz win. Michael Jackson receives Artist of the Century award.

  3. US President George W. Bush in his State of the Union address describes "regimes that sponsor terror" as an "Axis of Evi

    US President George W. Bush in his State of the Union address describes "regimes that sponsor terror" as an "Axis of Evil," which includes Iraq, Iran, and North Korea

  4. "Blue" country and pop singer LeAnn Rimes (19) weds backup dancer Dean Sheremet (21) at Perkins Chapel in Dallas, Texas

    "Blue" country and pop singer LeAnn Rimes (19) weds backup dancer Dean Sheremet (21) at Perkins Chapel in Dallas, Texas

  5. US invasion of Afghanistan: US conventional forces first deployed as part of Operation Anaconda

    Shortly after the September 11 attacks in 2001, the United States declared the war on terror and subsequently led a multinational military operation against Taliban-ruled Afghanistan.

More from the 2000s

Frequently Asked Questions

What happened on April 7, 2001?
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 spectrometers and a thermal imager to detect evidence of past or present water and ice, as well as study the planet's geology and radiation environment.
Why is Mars Odyssey is launched significant?
2001 Mars Odyssey is a robotic spacecraft orbiting the planet Mars.

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