Your task is to write a program which asks the user to input the name of a planet. The program should then display the density of that planet. The density of each planet is: Planet Density mercury 5429 venus 5243 earth 5514 mars 3934 jupiter 1326 saturn 687 uranus 1270 neptune 1638 Source: https://nssdc.gsfc.nasa.gov/planetary/factsheet/ In your code you shall define a dictionary constant containing the data in the above table, using the appropriate data types for keys and values. Next, ask the user to input a planet name. If the planet name is in the dictionary, display the density of the planet. Otherwise, display the message "Unrecognised planet". To be more user-friendly, you must also ignore the capitalisation of the input name when checking it (i.e. "mercury", "MERCURY", and "Mercury" are all accepted by the program). Hint: Ensure that planet names in your dictionary are all in lowercase, then use the appropriate string method to convert the user input to lowercase also. r 1. r Criteria During marking we will check that your program: Defines a dictionary constant containing planet names and densities and use this in your code. Give the constant an appropriate name which follows Python conventions. (4 marks) Accepts the planet name from the user with an appropriate input statement. (2 marks) Ignores the capitalisation of user input. (4 marks) Checks whether the input planet is not in the dictionary and print an appropriate output message. You must not write code which explicitly compares the user input with each individual planet name. (3 marks) Gets and displays the planet density using the dictionary constant. (4 marks) Executes as expected for example and other inputs. (3 marks) Example Runs Run 1 Enter the name of a planet: mercury That planet has a density of 5429 kg/m 3 Run 2 Enter the name of a planet: EaRtH That planet has a density of 5514 kg/m 3 Run 3 Enter the name of a planet: naboo Unrecognised planet Your code should execute as closely as possible to the example runs above. To check for correctness, ensure that your program gives the same outputs as in the examples, as well as trying it with other inputs.