NASA’s Perseverance Mars rover landed on the red planet recently. It was launched on 30 July 2020 under Mission Mars 2020, exploiting the closest approach phenomenon. But how many countries have launched a mission to Mars? How many of them have been successful? Here are all the details. The geographical & other conditions in Mars are in proximity with that of Earth which has resulted in speculation that there is a possibility of life on the red planet. Mars is a little more than half the Earth’s size with a gravity of only 38% that of Earth. Roughly, the land area in Mars is equal to the area of continents on Earth. Scientists have also suggested that there must have been a vast ocean in Mars’ northern hemisphere. Some other visible features on Mars may be that of ancient flowing liquids such as river valleys, streams, deltas, and basins, according to Mars experts.