Chapter- 4Gravity And CurvatureAccording it Einstein, the Gravity of
an object in space exists from the
beginning to the end of its curvature.
Every object in space, even a gas
particle will have its own curvature. In
big curvatures, light will get more
bended so its wavelength will be more
increased and in small curvatures, light
will get less bended and wavelength
will be less increased. But when light
will get past the curvature, light will
come back to its state in the past.
Nebulas are space clouds, which are
formed by the left over gases of dead
stars or now born stars. Sometimes the
birth rate of stars in a nebula increases
and sometimes decreases so the length