Jupiter has a huge influence in the Solarsystem, the big gravitation of Jupiter and also the Sun can deflect most of the asteroids and Comets from the Earth orbit, but in certain circumstances can do the opposite and launch objects into Earth's orbit, depending on what angle they enter the system..
A good example is Apophis (∅~370 m), which is coming to visit us in 2029, although at quite a distance, but it will return in Abril 2036 and in this case, if it passes through a certain point there is a possibility that it will impact the Earth..
What a great & optimal design for actual humans to live and work - it would have been cheaper to make a square building with giant floors and a fraction of the windows (and far less natural light for inhabitants).
They prob left the remaining sides free to not infringe on MS Windows logo trademark.
And H designs are just somehow aesthetically unpleasing to me personally (for real).
There are several plans to avoid it, but it depends of several factors. We can avoid an impact if we know the exact position several Years before the supposed impact, if not, there is nothing we can do.