I took a quick look at your chart and noticed that Mars is really "plugged in" to your chart through Pluto and the tight aspects this planet makes with your Cancer Moon and Venus in Capricorn.
I've also noticed that because Mars is so strongly placed in Scorpio, it is the final dispositor of much of your chart, particularly the planets in Sagittarius and Capricorn. All of the planets in Sagittarius are disposited by Jupiter in Aries, which is directly disposited by Mars in Scorpio. The energy is very direct here; it doesn't move around the chart much to find its final dispositor. Similarly, your Neptune and Venus in Capricorn are disposited by Saturn in Sagittarius, which is disposited by Jupiter in Aries, which is disposited by Mars in Scorpio. Again, this is all fairly directly, and all roads seem to lead to Mars in Scorpio.
It is not surprising then that of all the planetary placements you could have inquired about, you asked for information about about your natal Mars. Mars is tightly conjunct the ninth house cusp to boot, so I imagine that its influence is stronger there than if it had been sort of floating in the middle of the house.
The ninth house is typically known as the house of religion, philosophy, and higher education; it has something of the influence of Jupiter if you use the astrological alphabet because Sagittarius is the sign typically associated with the ninth house. Using this system, I imagine that Mars would have been slightly more comfortable in the eighth house than the ninth, but Mars/Scorpio/eighth house would have been a lot to handle. The Martian energy here is still quite strong, yet it will focused in a different area of your life. Perhaps you are quite strong about your particular religious or philosophical beliefs; I don't know if Mars and Scorpio is the type of influence that would attempt to "convert" others to your own views, but the Martian/Scorpionic energy is quite forceful, so I imagine that this could be a possible mode of expression--but not the only one, of course.
Here's a slightly different interpretation of
Scorpio on the ninth house cusp from
Astrology-Numerology.com. Mars is the traditional ruler of Scorpio, so these energies are quite similar:
Scorpio
The influence of Scorpio in the ninth house shows a strong interest in abstract ideas and studying the many mysteries of life. There is great depth in your need to know and understand the purpose of living. It is probable that your studies and philosophy will be outside what is considered orthodox; it is likely that occult laws will hold a special interest for you. You are critical of formal academic disciplines, preferring to attune yourself to these questions through direct experience instead of through normal intellectual processes. There is a strong, almost compulsive urge to travel around the world. Although it is a bit out of style these days, traveling by sea should have a special appeal for you.
Here's the interpretation of
ninth house Mars from this same site:
Ninth House
The Mars ninth house placement in your chart shows an active interest in travel, outdoor sports and religious or philosophical causes. You always have the courage of your convictions and a forceful approach to promoting your ideas. You can sway others to your beliefs with sheer enthusiasm, and you become very upset and impatient when you can't. When it comes to travel, you are adventurous, and if the means are available, you will spend a good deal of time traveling abroad. You are aggressive in your pursuit of education and personal development.
...and let's include
ninth house Pluto while we're at it:
Ninth House
Pluto is positioned in the ninth house of higher thought suggests the need to understand the fundamental forces of man and nature. The higher mental powers are especially strong and inclined toward regeneration of legal, educational, moral, and philosophic systems. There is significant perception of the core causes of problems connected with the larger social order. The intuition regarding such matters is highly developed giving profound insight and understanding. You have little tolerance for hypocrisy and social injustice. There may be a tendency to impose views on others.
So all of these interpretations pretty much combine the symbolism of Mars/Scorpio with that of the ninth house, which as I mentioned before, is commonly associated with Jupiter/Sagittarius. I hope this helps somewhat...
I thought I'd include the Sabian symbols of your Mars and Pluto because they often provide deep insight into the meaning of the particular degree at which each planet is located:
Mars:
Scorpio 9:
A dentist is hard at work.
Pluto:
Scorpio 12:
A brilliant assembly of dignitaries at an official embassy ball.
The Sabian symbol for Mars in particular seems to emphasize the sheer focus and determination of Mars in Scorpio; Scorpio is a fixed sign and is not inclined to give up easily, nor will it waver in pursuit of its goals. Sheer tenacity!
There is also a strong element of discipline with this degree, as a dentist is sort of a Saturn-type figure that removes the plaque from teeth and attempts to instill good dental hygiene in his patients; after months of eating sugary candies and treats, he comes in to correct the damage.
Arian Maverick