In the remote outer reaches of planetary systems, far beyond the orbit of known planets, enormous and mysterious worlds silently loop around their stars. Some drift as far as 10,000 times the distance ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

According to the simulation, planetary orbits are indeed susceptible to perturbation from the companion star. As the researchers suspected, this can happen when a planet’s precession is resonant ...

To get a fuller picture of the effects of giant planets on the climates of terrestrial ones, the team built a model with slightly different orbits for Jupiter — 160,000 of them.

According to their simulations, the passages of field stars could result in the loss of planets over the next 5 billion years. Their results also indicate that the orbits of the gas/ice giants and ...

Simulation Tracks Planetary Evolution Two British astronomers have constructed a computer simulation that tracks how giant protoplanets tend to form and migrate inward toward their central star.

Back in February, scientists at NASA discovered seven planets orbiting an ultra-cool dwarf star (Trappist-1), 40 light-years from our solar system. The find was highlighted because of the fact ...

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Mercury’s risk of orbital disruption rises by 50–80%. There’s a 0.3% chance Mars could be lost through collision or ejection, ...

The planet 2M1510 (AB) b orbits two stars — like Luke Skywalker’s home planet of Tatooine, for the Star Wars fans — but it does so in a highly unusual way.

This link, called "trapping efficiency," shows how often scattered planets end up in stable wide orbits. The research found that in solar system-like conditions, trapping happens about 5–10% of ...

For centuries, astronomers have sought to understand the formation and evolution of the solar system and the dynamics that govern it. In particular, there is the long-standing question of whether ...