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Mars was formed at the same time as the rest of the solar system, from a large spinning disk of gas and dust. Astronomers think that all this happened about 4.6 billion years ago! So Mars is about 4.6 billion years old.
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coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/mars_ag...
coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/mars_age.shtml
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Why is Mars reddish?; What is the highest mountain on Mars?; When did we first land a spacecraft on Mars?; How large is Mars compared to Earth?; How strong is the gravity on Mars?; How long is a day on Mars?; How long does it take Mars to go around the sun?; Does Mars have any moons?; How bad are the dust storms on...
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coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/mars.sh...
coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/mars.shtml
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About 4.6 billion years which is the same age as our solar system since everything in the solar system formed at the same time.
http://wiki.answers.com/Q/HOw_long_has_mars_been_in_atm...
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Mercury Venus Earth Mars Jupiter ... Saturn Uranus Neptune Pluto Small Bodies ... Internal links within this site are not identical to the old site, so please adjust any links to this site accordingly.
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pds.jpl.nasa.gov/planets/welcome/mars.htm
pds.jpl.nasa.gov/planets/welcome/mars.htm
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An Earth day is about 24 hours long. An Earth year is about 365 days long. Days and years on other planets are different. Some planets have very long days. Some have very short days. Some have very long years. Some have very short years. Ty...
http://www.nasa.gov/audience/forkids/games/A_Age_on_Mar...
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QUESTION: How old is Mars? ANSWER from Ted Roush on February 20, 1997: One means of estimating the age on Mars is to count the different size of craters seen there. Thus the oldest rocks on Mars appear to be about the same age as the 4.5 billion year old materials found on the Earth.
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quest.arc.nasa.gov/mars/ask/misc/Age_of_Mars.txt
quest.arc.nasa.gov/mars/ask/misc/Age_of_Mars.txt
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The Mars Team ... Read about the day-to-day activities of the Mars team members in a series of Field Journals. ... Overall Mars Mission Management...
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quest.arc.nasa.gov/mars/team/index.html
quest.arc.nasa.gov/mars/team/index.html
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Q: How do they know you're from Mars? No offense, but to me you look likea pretty ordinary rock. ... They were still painting caves in the Old World. Well, it snowed a little every winter, and after a few thousand years I was buried in deep ice. What a bummer, I thought, no one will ever find me now.
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www.amnh.org/mars/od3.html
www.amnh.org/mars/od3.html
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