The formation of Earth is a cosmic tale that stretches back over 4.5 billion years, from the swirling gases and dust of the solar nebula to the planet we know today. But how exactly did Earth come to ...

This video segment examines the scientific debate over the events that triggered the birth of our solar system.

Solar Nebula, Study Suggests Researchers say the hydrogen contained in these clouds of gas and dust contributed to formation of one out of every 100 water molecules found on Earth ...

According to this theory, the shock wave would have injected material from the exploding star into the solar nebula.

THE hypothesis of Kant and Laplace that the solar system originated by a gradual process from the contraction of a rotating nebula has become more and more improbable as the theory of such a ...