Pressure from the stars» light pushes dust outwards, but until recently it was assumed that
this happened at a constant rate, creating a smoothly expanding envelope of dust and gas.
There's weird crap
happening far out in the solar system on Voyager and Pioneer spacecraft not being
at the position and velocity where theory says they should be and radiothermal power supplies not decaying
at rates predicted upon what are axiomatically
constant radioactive decay
rate of the isotopes like it isn't really a
constant at all.