Mars

The mas of Mars is:  Mars has a mass of 6.4169 x 1023 kg, slightly more than 10% of the Earth’s mass.

the size of mars is:

2,106 miles (3,390 km)


2,106 miles (3,390 km)


this is how long it takes to routate around the sun

Mars rotation is 24 hours, 39 minutes, and 35 seconds if you are interested in the solar day or 24 hours, 37 minutes and 22 seconds for the sidereal day.

Phobos and Deimos, photographed here by the Mars Reconnaissance Orbiter, are tiny, irregularly-shaped moons that are probably strays from the main asteroid belt. Credit: NASA - See more at: http://astrobob.areavoices.com/2013/07/05/rovers-capture-loony-moons-and-blue-sunsets-on-mars/#sthash.eMDpTVPT.dpuf

A total of 38 spacecraft have at least partially successfully completed a mission at Venus. About a dozen or so more have tried and failed to study this scorching hot world.

How many spacecraft have been to Venus? - About Space

www.spaceanswers.com/space-exploration/how-many-spacecraft-have-been-to-venus/

Historical Log

#

Launch Date

Name

Country

Result

Reason

1 1960 Korabl 4 USSR (flyby) Failure Didn't reach Earth orbit

2 1960 Korabl 5 USSR (flyby) Failure Didn't reach Earth orbit

3 1962 Korabl 11 USSR (flyby) Failure Earth orbit only; spacecraft broke apart

4 1962 Mars 1 USSR (flyby) Failure Radio Failed

5 1962 Korabl 13 USSR (flyby) Failure Earth orbit only; spacecraft

6 1964 Mariner 3 US (flyby) Failure Shroud failed to jettison

7 1964 Mariner 4 US (flyby) Success Returned 21 images

8 1964 Zond 2 USSR (flyby) Failure Radio failed

9 1969 Mars 1969A USSR Failure Launch vehicle failure

10 1969 Mars 1969B USSR Failure Launch vehicle failure

11 1969 Mariner 6 US (flyby) Success Returned 75 images

12 1969 Mariner 7 US (flyby) Success Returned 126 images

13 1971 Mariner 8 US Failure Launch failure

14 1971 Kosmos 419 USSR Failure Achieved Earth orbit only

15 1971 Mars 2 Orbiter/Lander USSR Failure Orbiter arrived, but no useful

16 1971 Mars 3 Orbiter/Lander USSR Success Orbiter obtained approximately 8 months of data and lander landed safely, but only 20 seconds of data

17 1971 Mariner 9 US Success Returned 7,329 images

18 1973 Mars 4 USSR Failure Flew past Mars

19 1973 Mars 5 USSR Success Returned 60 images; only lasted 9 days

20 1973 Mars 6 Orbiter/Lander USSR


http://mars.nasa.gov/programmissions/missions/log/
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