How many space crafts have we sent to mars? Names and all?
402667
I do not know all of them, but there were at least a half dozen Mariner, Viking, and Soviet probes that were sent to Mars in the 70's.  There have been three landings.  The Sojourner rover landed in 1997; and the Spirit and Opportunity rovers landed in 2004 and are still going strong.
628520
Look at how many sattelites we put up... there is something wrong with your reasoning, you're ignoring a lot of the facts.  How is it more difficult now?  A civilian recently built and flew his own spacecraft into space 3 times successfully.  Hundreds of satellites are orbiting the earth as we speak.  How does it seem space travel is more difficult?  We have several astronauts in a spacestation right now... Civilians have purchased tickets into space, the people on the space station have been relieve, replaced, etc multiple times... As far as the moon goes, there really isn't/wasn't any reason to go back, not a whole lot there if ya know what I mean ;)  They're working on mars projects continuously... just because a few landers and orbiters crash doesn't mean things are more difficult.  If you do some research you will find literally hundreds of crashes, mislaunches, explosions, and other quality errors; the old times make the number and degree of current mistakes seem almost trivial.  Science and technology have proven themselves time and time again when it comes to space, and it keeps getting better.
426189
see for yourself.\n\nhttp://marsrovers.nasa.gov/home/index.html
5355
No one knows.\n\nThere are about 10 planets in our solar system, depending on whom you ask.\n\nAround 100 planets have been detected in other solar systems.\n\nThere are at least 200 billion stars in the Milky Way Galaxy (ours).\n\nIf the average number of planets per star is 10, then there are 2000 billion or 2 trillion planets in our galaxy.\n\nNo one knows how many billion galaxies are in the Universe.
1104643
As has already been mentioned we have at least two very fine robots on Mars.  But to make it possible for humans to make the trip, there are a number of problems.  It is a very long way to go and people need to survive the distance and still be in good enough physical condition to move around the surface of Mars.  They also need to have sufficient fuel to make the round trip.  NASA has been generating plans for such an operation for years and it continues to work on them.  For the most current ideas, try going to "www.NASA.gov" and searching the site for topics about Mars.  You'll learn a lot about the program.
782975
That is currently a hot question in debate which has yet to be answered.  Despite five rovers being sent to Mars there has been no evidence of life, even in the form of bacteria or simpler organisms.  Some scientists believe there exists (or existed) life on Mars and that the first organisms on Earth arrived here from Mars via a meteor.
604824
The astrobiology folks at NASA have calculated that there are between one and thirty billion habitable planets in our Milky Way Galaxy.  If our solar system is typical,  you can multiply that by about 10 to get total planets: between 10 and 300 billion.  \n\nSo where is everybody?
607832
Unknown. We don't even know for certain how many there are now. There's at least three, but some scientific research indicates there may be as many as 11.
102722
Space Shuttle travels about 17,580 mph\n\nEarth to Mars is about 35,000,000 miles (at its closest) so...\n\nabout 1990 hours to get to mars, or around 82.95 days.\n\nHowever, as the previous answerer stated, fuel for that would be almost impossible to do at those speeds, but that wasn't your question, was it?\n\nAll of these numbers are approximates. Hope this helps.
270456
On average, 2,432,890.5 miles per day. (Mars orbital circumference of 888,005,041 miles divided by 365 days.)
1059573
Sure if you mean a robotic space craft. We could even send a human, if we don't care that he would die shortly. As far as sending a craft with a living human, we don't have that technology within a reasonable price range.
1126158
There are almost 25,000 man-made objects: 8681 currently in orbit, and over 16,000 objects in a state of decay. Not every single satellite is included, since some are too small or too far away from home to be detected.
553832
Mars is the fourth planet from the Sun and the seventh largest: \n\n      orbit: 227,940,000 km (1.52 AU) from Sun\n      diameter: 6,794 km\n      mass: 6.4219e23 kg\n\n\n Mars (Greek: Ares) is the god of War. The planet probably got this name due to its red color; Mars is sometimes referred to as the Red Planet. (An interesting side note: the Roman god Mars was a god of agriculture before becoming associated with the Greek Ares; those in favor of colonizing and terraforming Mars may prefer this symbolism.) The name of the month March derives from Mars. \n\nMars has been known since prehistoric times. Of course, it has been extensively studied with ground-based observatories. But even very large telescopes find Mars a difficult target, it's just too small. It is still a favorite of science fiction writers as the most favorable place in the Solar System (other than Earth!) for human habitation. But the famous "canals" "seen" by Lowell and others were, unfortunately, just as imaginary as Barsoomian princesses. \n\n\nViking 2 Landing Site  Pathfinder Landing Site The first spacecraft to visit Mars was Mariner 4 in 1965. Several others followed including Mars 2, the first spacecraft to land on Mars and the two Viking landers in 1976. Ending a long 20 year hiatus, Mars Pathfinder landed successfully on Mars on 1997 July 4. In 2004 the Mars Expedition Rovers "Spirit" and "Opportunity" landed on Mars sending back geologic data and many pictures; they are still operating after more than a year on Mars. Three Mars orbiters (Mars Global Surveyor, Mars Odyssey, and Mars Express) are also currently in operation. \n\nMars' orbit is significantly elliptical. One result of this is a temperature variation of about 30 C at the subsolar point between aphelion and perihelion. This has a major influence on Mars' climate. While the average temperature on Mars is about 218 K (-55 C, -67 F), Martian surface temperatures range widely from as little as 140 K (-133 C, -207 F) at the winter pole to almost 300 K (27 C, 80 F) on the day side during summer. \n\nThough Mars is much smaller than Earth, its surface area is about the same as the land surface area of Earth. \n\n Olympus Mons Mars has some of the most highly varied and interesting terrain of any of the terrestrial planets, some of it quite spectacular: \n\nOlympus Mons: the largest mountain in the Solar System rising 24 km (78,000 ft.) above the surrounding plain. Its base is more than 500 km in diameter and is rimmed by a cliff 6 km (20,000 ft) high. \nTharsis: a huge bulge on the Martian surface that is about 4000 km across and 10 km high. \nValles Marineris: a system of canyons 4000 km long and from 2 to 7 km deep (top of page); \nHellas Planitia: an impact crater in the southern hemisphere over 6 km deep and 2000 km in diameter. \nMuch of the Martian surface is very old and cratered, but there are also much younger rift valleys, ridges, hills and plains. (None of this is visible in any detail with a telescope, even the Hubble Space Telescope; all this information comes from the spacecraft that we've sent to Mars.) \n\n Southern Highlands The southern hemisphere of Mars is predominantly ancient cratered highlands somewhat similar to the Moon. In contrast, most of the northern hemisphere consists of plains which are much younger, lower in elevation and have a much more complex history. An abrupt elevation change of several kilometers seems to occur at the boundary. The reasons for this global dichotomy and abrupt boundary are unknown (some speculate that they are due to a very large impact shortly after Mars' accretion). Mars Global Surveyor has produced a nice 3D map of Mars that clearly shows these features. \n\nThe interior of Mars is known only by inference from data about the surface and the bulk statistics of the planet. The most likely scenario is a dense core about 1700 km in radius, a molten rocky mantle somewhat denser than
628659
Less than 34 and more than 3.  Here is a link to a copy of NASAs current shuttle flight Manifest.  It is somewhat hard to tell which flights are bringing modules and other pieces of permanent hardware to the the ISS, but it looks like at least 10 flights are. \n\nhttp://www.thespaceplace.com/shuttle/future.html
249105
Thirteen.\n\nOriginally it was thought there were the nine that were 'found' by Voyager 2 in 1986. Since then there's been more exploration and the discovery using the Hubble Telescope in December last year brought the current total to 13.  There's also incomplete rings called Ring Arcs
496612
Some of it floats in space; much of it orbits Earth. You can find it on the surfaces of Venus and Mars and twenty tons of it is actually parked on the Moon! Some call it space trash, others refer to it as space junk or space debris. All three terms identify the same items -- man-made objects remaining in space though they no longer serve any useful purpose. Mankind¹s journey into space began in 1957 when the Soviet Union launched Sputnik, the first artificial satellite. Since that time more than 4,000 satellites have been launched into orbit. With so much traffic travelling into space, is it any wonder that a little trash has been left behind?
750080
There are 192 member countries recognized by the United Nations, and 193 recognized by the state department of the U.S. There are currently 9 (the number is disputed) planets if you count Pluto and 8 if you don't, but that is just in our solar system. There are a lot more planets out there.