solar nebula, gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation. Swedish philosopher Emanuel Swedenborg in 1734 proposed that the planets formed out of a nebular crust that had surrounded the Sun and then broken apart.

Who discovered the nebular?

In 1610, Nicolas-Claude Fabri de Pieresc discovered the Orion Nebula, which was then observed in 1618 by Johann Baptist Cysat. The first detailed observations, though, waited for famous scientist Christiaan Huygens in 1659.

When was nebular hypothesis given?

Nebular Hypothesis, an explanation of how the solar system was formed, proposed by Pierre Simon de Laplace in 1796.