Orbital elements like spacecrafts, space stations, and satellite orbits, though in relatively thinner air density, nonetheless must account for atmospheric drag since atmospheric drag is the main cause of orbital decay, a pressing concern for all objects in circular orbit. This must be addressed regularly by orbital mechanics according to certain time scalesIn orbital space crafts, like space stations and telescopes, atmospheric drag caused by collision with gas molecules is the main reason for orbital decay, whereby the orbital trajectory of an object degrades overtime until ultimately it collides with the object it is orbiting. This is addressed through corrective orbital boosts, which reposition the object on its orbital trajectory which brings me to my question, where is Hubble? Since there have been no missions to reposition Hubble according to the International aeronautical database, my calculations pushed Hubble roughly two miles below the space station which means it's fixing to crash to Earth if it were in space. There's a couple of the things I'm concerned with about Hubble. Hubbell isn't in the international aeronautical database for the greatest mass lifted to the highest altitude. If it were taken to space 300 nautical miles above Earth it would be in the international aeronautical database for the greatest Mass lifted for the highest altitude. I couldn't even find the documentation in the international aeronautical database showing that Hubble went to space but every servicing mission is listed. Which brings me to my next question, was Hubble on Challenger in 1986? They say Hubbell was sent to space in 1990 give it's not in the International aeronautical database as well they should be which brings me to my next question. Where are Hubble's pictures coming from? Image comparative analysis mattress it with Sophia which is very well plausible Sofia has all the capable specifications to do everything Hubble can do. Has anybody else caught on to this?