ok, hope I can word this correctly. What is the difference between one revolution of earth around the sun compared to mars? And how often does mars revolve close to earth and for how long?
Hope that made sense.
2007-02-13 12:39:36 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
this isn't for homework, I'm actually just curious :P
2007-02-13 13:47:01 · update #1
Well, mars is further out and has a bigger revolution than earth does.
1 Mars day is equal to 24 hours and 37 minutes (earth time).
1 Mars year is equal to 687 Earth days.
2007-02-13 12:47:55 · answer #1 · answered by Anonymous · 6⤊ 1⤋
Mars is farther from the sun, so its year (one revolution around the sun) is about twice as long as earth's (about 687 earth days long).
Mars is a smaller world but rotates on its axis more slowly than earth, so a Mars day is a little longer than an earth day (about 24.5 hours long).
As for when Mars is close to earth - picture 2 cars driving around a circular race track. The one farther from the centre is going 20 mph, and the one closer to the centre is going 40 mph.
They leave the starting line at the same time, and the faster car moves ahead of the slower car. It will get all the way around the track once while the slower car has only gone half way around. They keep going, and the faster car will catch up with the slower car at some point on the track. That will only last for a short time, and then the faster car passes the slower one. This is sort of like how our two planets orbit the sun.
Hope this helps. To find out more about Mars orbit, check out astronomy.com or nasa.gov.
2007-02-13 22:09:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
If you look at the Solar System, the Earth is the 3rd planet away from the Sun and Mars is the 4th planet.
Earth completes a revolution around the Sun in approximately 365 days; Mars completes a revolution around the Sun in approximately 687 days.
2007-02-17 14:53:55 · answer #3 · answered by Tenebra98 3 · 0⤊ 0⤋
The time required for Mars to complete one orbit around the sun compared to earth is 1.8809. One Martian year is 1.8809 earth years. Here is a link.
http://www.windows.ucar.edu/tour/link=/the_universe/uts/orbits_data.html
As for the second question--I think you are referring to the close oppositions between the earth and Mars that occur about once every 26 months. Here is a link.
http://webpages.charter.net/darksky25/Astronomy/Articles/April2003.html
2007-02-13 20:49:02 · answer #4 · answered by Northstar 7 · 2⤊ 1⤋
lol mr. Homework... u can probuly go onto a planatermy website and fidn out cuz not too manny people are gona this this off the top of there head
2007-02-13 20:49:38 · answer #5 · answered by jecctt 2 · 0⤊ 0⤋