When did Mars become inhospitable?

[anagogy]

In time/space mass becomes zero, and time become infinite.

Why would you claim that? time/space is the reciprocal of space/time, which would mean mass is infinite in space/time.

70.19 Questioner: Were these constructed in time/space or space/time?

Ra: I am Ra. We ask your persistent patience, for our answer must be complex.

A construct of thought was formed in time/space. This portion of time/space is that which approaches the speed of light. In time/space, at this approach, the conditions are such that time becomes infinite and mass ceases so that one which is able to skim the, shall we say, boundary strength of this time/space is able to become placed where it will.

When we were where we wished to be we then clothed the construct of light with that which would appear as the crystal bell. This was formed through the boundary into space/time. Thus there were two constructs, the time/space or immaterial construct, and the space/time or materialized construct.