As far-fetched as it may seem, quirks of orbital mechanics could allow hundreds of planets to be packed around a star ...

Planet 9 is the hypothetical ninth planet in our Solar System. Has it finally been found using IRAS and AKARI mission data?

According to scientists' calculations, when the Sun becomes a red giant, its outer layers could reach the current orbit of ...

Computer modeling has shown that the Solar System may lose its current structure much earlier than previous calculations had ...

New modeling shows that chaotic mass loss from the Sun could shake up the orbits of giant planets even before it turns into a ...

Taiwanese scientists have re-analyzed data from previous space observations and identified a celestial body that could be the hypothesized ninth planet in the Solar System — Planet Nine. If this ...

Imagine if the planet Jupiter orbited much closer to the Sun. What effect would a so-called hot Jupiter have on our Solar ...

Astronomers have identified two broad families of planetary systems whose differences are linked to the stars they orbit. One ...

The Sun’s death is not an event the planets will quietly survive—it is the trigger for their orbital undoing.” ...

Planet Nine? Jupiter might be the goon of all planets. Its sheer size and gravitational pull likely once threw a planet out ...

As published in The Astrophysical Journal Letters, theoretical astrophysicists Konstantin Batygin and Jim Fuller of Caltech, ...