2004 in science

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The year 2004 in science had some important events, listed below.

Events[change]

January 3 - NASA's Spirit rover lands on Mars.
January 24 - NASA's Opportunity rover lands on Mars.
March 2 - NASA says that the area where their Mars probe Opportunity landed shows unmistakable signs of contact with water in the geological past.
March 4 - NASA's Spirit finds proof of past contact with water in volcanic rocks on Mars.
April 20 - NASA launched the Gravity Probe B to test the general theory of relativity of Einstein.
October 27 - The Homo floresiensis has been discovered by Peter Brown, Michael Morwood and their colleagues.
September 13 - Astronomers from the European Southern Observatory announce images that seem to show a planet orbiting a brown dwarf about 230 light years away.
November 15 - The SMART-1 space probe reaches orbit around the Moon. It is the first European space mission to do so.