2007-04-20 06:32:23 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
Equatorial radius: 3402.5 km (2114.2 mi)
(0.533 Earths)
Polar radius: 3377.4 km (2098.6 mi)
(0.533 Earths)
2007-04-20 07:24:45 · answer #1 · answered by ђermiona 6 · 0⤊ 0⤋
About 1/4, th the size of Earth.
2007-04-26 21:10:33 · answer #2 · answered by ThomasL 6 · 0⤊ 0⤋
Approximately half the size of earth. The interesting thing is that it has the largest mountain known in the Solar system (Olympus Mons) and the largest canyons (Valles Marineris). Does size matter???? I'll leave that question for some other time.
2007-04-20 13:43:46 · answer #3 · answered by btiger75 2 · 0⤊ 0⤋
Mars has a diameter of 4,222 miles, which makes it a little more than half the diameter of Earth. It has about one-ninth the mass of Earth. Carpe Diem!
2007-04-20 13:40:56 · answer #4 · answered by carpediem4485 3 · 1⤊ 0⤋
My math teacher told me that scientists are trying to find a way to put people on planet mars to LIVE. While there, they will find new resources for humans and if there are efficient supplies of resources there, we are planning on sending people there by the year 2028. =]
Scary, huh?
2007-04-20 13:40:46 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Mars is about half the diameter of Earth.
Earth is 12,104 km and Mars is 6,787 km.
2007-04-20 13:36:49 · answer #6 · answered by campbelp2002 7 · 0⤊ 0⤋
Mars: Facts & Figures
Discovered By
Known by the Ancients
Date of Discovery
Unknown
Average Distance from the Sun
Metric: 227,936,640 km
English: 141,633,260 miles
Scientific Notation: 2.2793664 x 108 km (1.523662 A.U.)
By Comparison: 1.524 x Earth
Perihelion (closest)
Metric: 206,600,000 km
English: 128,400,000 miles
Scientific Notation: 2.066 x 108 km (1.381 A.U.)
By Comparison: 1.404 x Earth
Aphelion (farthest)
Metric: 249,200,000 km
English: 154,900,000 miles
Scientific Notation: 2.492 x 108 km (1.666 A.U.)
By Comparison: 1.638 x Earth
Equatorial Radius
Metric: 3,397 km
English: 2,111 miles
Scientific Notation: 3.397 x 103 km
By Comparison: 0.5326 x Earth
Equatorial Circumference
Metric: 21,344 km
English: 13,263 miles
Scientific Notation: 2.1344 x 104 km
Volume
Metric: 163,140,000,000 km3
Scientific Notation: 1.6314 X 1011 km3
By Comparison: 0.150 x Earth
Mass
Metric: 641,850,000,000,000,000,000,000 kg
Scientific Notation: 6.4185 x 1023 kg
By Comparison: 0.10744 x Earth
Density
Metric: 3.94 g/cm3
By Comparison: 0.714 x Earth
Surface Area
Metric: 144,100,000 km2
English: 89,500,000 square miles
Scientific Notation: 1.441 x 108 km2
By Comparison: 0.282 x Earth
Equatorial Surface Gravity
Metric: 3.693 m/s2
English: 12.116 ft/s2
By Comparison: If you weigh 100 pounds on Earth, you would weigh 38 pounds on Mars.
Escape Velocity
Metric: 18,072 km/h
English: 11,229 mph
Scientific Notation: 5.02 x 103 m/s
By Comparison: Escape velocity of Earth is 25,022 mph.
Sidereal Rotation Period (Length of Day)
1.026 Earth days
24.62 hours
By Comparison: Earth's rotation period is 23.934 hours.
Sidereal Orbit Period (Length of Year)
1.8807 Earth years
686.93 Earth days
Mean Orbit Velocity
Metric: 86,871 km/h
English: 53,979 mph
Scientific Notation: 24,130.9 m/s
By Comparison: 0.810 x Earth
Orbital Eccentricity
.0934
By Comparison: 5.59 x Earth
Orbital Inclination to Ecliptic
1.8 degrees
Equatorial Inclination to Orbit
25.19
Orbital Circumference
Metric: 1,366,900,000 km
English: 849,400,000 miles
Scientific Notation: 1.3669 x 109 km
By Comparison: 1.479 x Earth
Minimum/Maximum Surface Temperature
Metric: -87 to -5 °C
English: -125 to 23 °F
Scientific Notation: 186 to 268 K
Atmospheric Constituents
Carbon Dioxide, Nitrogen, Argon
Scientific Notation: CO2, N2, Ar
By Comparison: CO2 is responsible for the Greenhouse Effect and is used for carbonation in beverages.
N2 is 80% of Earth's air and is a crucial element in DNA. Ar is used to make blue neon light blubs.
Mars's Moons
1. Phobos
2. Deimos
2007-04-26 00:12:52 · answer #7 · answered by gika 2 · 0⤊ 1⤋
scsiencetet ay mars in size is a example of the earth core
2007-04-20 15:49:03 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Half the size of the earth
2007-04-23 00:36:36 · answer #9 · answered by hilltopobservatory 3 · 0⤊ 0⤋
mazen
2007-04-28 12:06:37 · answer #10 · answered by mohamed s 1 · 0⤊ 0⤋