An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

A new climate modeling study published in the journal Science Advances by researchers from the IBS Center for Climate Physics ...

After running each scenario, the simulation would yield theoretical orbits for the four giant planets that should result from the encounter with that object. Most of the simulations created ...

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

Russia is testing a new plasma rocket engine that would drastically reduce travel time from earth to mars using charged ...

“Given that we understand the orbits of the planets we can predict when these alignments will occur.” While the planets may look relatively close together in the sky they are of course ...

Or, for those who remember vinyl records, think of the grooves around the central hub as the planets' orbits. Earth’s orbit lies in that same plane, so from our perspective, we cannot see the ...

those that are beyond the eighth planet, with highly “tilted” orbits compared to the ecliptic plane. This seemed odd and illogical as when the Solar system formed, it would be expected that ...