There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

When our solar system formed, Mars formed earlier than Earth, and its composition gives clues about early steps in planet formation. A new UC Davis study overturns previous ideas about how rocky ...

The Orion Nebula, which our solar system may have resembled some 4 billion years ago. Image: NASA, ESA, M. Robberto (Space Telescope Science Institute/ESA) and the Hubble Space Telescope Orion ...

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 process ...

The early solar system is still a bit of a mystery to scientists, but the secret to learning Jupiter's origins might be hidden in these tiny objects.

A new study of an old meteorite contradicts current thinking about how rocky planets like the Earth and Mars acquire volatile elements such as hydrogen, carbon, oxygen, nitrogen and noble gases as ...