This model of solar system formation is known as the nebular hypothesis. The solar system is structured in a roughly flat plane called the ecliptic, with most planets orbiting the sun in the same ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

The find shines light on how galaxies begin to turn gas and dust "into stars and planets," said astrophysicist Blakesley ...

Billions of years ago, in the frozen edges of the solar system, a violent impact shaped one of space’s oddest pairs. Instead ...

Ptolemy’s model and many earlier ideas of the Solar System had the Earth at the centre ... that this is the correct idea. Since its discovery in 1930, until 2006, Pluto was counted as the ...

An international team including astronomers from the Center for Astrophysics | Harvard & Smithsonian (CfA) has announced the discovery of ... be different from our solar system.