The force that pulls water into capillaries is called the

Osmotic pressure

The osmotic pressure is the force with which solute particles in blood (inside capillaries) pull on water.

Fluid movements across capillary wall is determined by two main factors;

Osmotic pressure depends on the number of osmotically active, non diffusible particles in the solutions separated by the membrane.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19