0 having or appearing to have no weight: --
There is a lot of interest in carrying out experiments in the weightless conditions which are experienced aboard space stations.
1 being in a state in which gravity (= the force by which the earth attracts objects) does not cause movement of objects: --
The astronauts are weightless in space.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.