Learn how a possible ninth planet, the theoretical Planet X, could have acquired its wide orbit in the outer Solar System — a ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

A new analysis of planet formation models estimates the odds of a theoretical Planet Nine orbiting our sun at 40% given ...

Researchers from Rice University claim to have fresh evidence of Planet Nine - as well as a method to find it.

Planets with unusually wide orbits may be normal by-products of the formation of planetary systems. This is suggested by new simulations.

B rocket is being fueled for launch of a complex deep-space mission targeting both a near-Earth asteroid and a comet.

Flares and solar eruptions can impact radio communications, electric power grids, and even pose risks to spacecraft and ...

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and ...

A FIELD of at least 20 asteroids has been found lurking near Venus, having previously been hidden by the Sun’s glare, experts ...

Pluto was long considered the ninth planet of the solar system, but changes to the definition of planet got it kicked out of ...

Find Planetary Orbits Latest News, Videos & Pictures on Planetary Orbits and see latest updates, news, information from NDTV.COM. Explore more on Planetary Orbits.

Scientific American spoke with the astronomer who has contributed to the discovery of two thirds of Saturn’s known moons ...