Condolences to the famillies, friends and colleagues of Columbia's crew.
After a tragedy such as this there will now rightly be a period of introspection, reflection and of course investigation on the part of those involved in the manned spaceflight programme. However the essence of space exploration and manned spaceflight is forward and outward looking in nature. The crew of STS 107 were drawn from diverse ethnic cultures but were united in their dedication to their science mission. The best way to honour the memory of this crew is to continue the work they so passionately believed in. The way to do this is to further develop the International Space Station, drawing on the talents of as many nations as possible, to maximise the scientific potential of this valuable resource and then share the information for the benefit of mankind.
I hope that your legacy will be that we can reep some rewards from the seeds that you helped sow.