cloud of gas and dust out of which a star condenses. The primordial gas and dust cloud from which the sun and planets condensed.
A cloud of gas and dust, rotating around the Sun, nearly in its rotational plane, during the time that the Sun and planets were forming. The planets built up through collisions of bits of dust and ice which were in this cloud, and in the process, acquired orbital motions which are very nearly in the same plane as the original rotation. Also see nebular theory, or planetesimal accretion theory.
fragmented portion of an interstellar cloud that has begun to contract under its own gravitation, eventually leading to the formation of a planetary system.
The disk of gas and dust that surrounded the sun when it was forming.
The cloud of gas and dust from which the solar system formed.
The cloud of gas and dust that formed the young Sun and the surrounding planets.
cloud of dust and gas that began to collapse about five billion years ago to form the solar system.
the cloud of gas and dust that began to collapse about 5 billion years ago to form the solar system.
The large cloud of gas and dust from which the Sun and planets condensed 4.6 billion years ago.
The large cloud of gas from which the Sun and planets were formed 4,600 million years ago.
In cosmogony, the solar nebula is believed to be a gaseous cloud from which Earth's solar system formed. This nebular hypothesis was first proposed in 1734 by Emanuel SwedenborgSwedenborg, Emanuel. 1734, (Principia) Latin: Opera Philosophica et Mineralia (English: Philosophical and Mineralogical Works), (Principia, Volume I). In 1755 Immanuel Kant, who was familiar with Swedenborg's work, developed the theory further.
