Question 8 - Space Elevator (hand in April 26)

SN 1006 https://en.wikipedia.org/wiki/SN_1006
is the brightest historically-recorded supernova.  Since the year
1006, the remnant has expanded to a radius of 10 parsecs, because
of the kinetic energy of the explosion.  The value of the latter
would be roughly one foe https://en.wikipedia.org/wiki/Foe_(unit)

Using dimensional analysis and the above numbers, estimate the local
density of the interstellar medium in that region.  For a hint, see
https://www.youtube.com/watch?v=_gaCAFcW6OY