A massive interstellar object passing through our solar system during its formative years likely altered the orbits of planets into trajectories observed today, a new study says. Interactions with ...

Theorbits of Jupiter, Saturn, Uranus and Neptune may have been altered by the fly-by of an enormous object from deep space, billions of years ago. According to a pre-print research paper, which is yet ...

Earth’s gravity has a lot to do with what people think is up and what is down. Things fall down toward the ground, but that direction depends on where you are.

The orbits of the planets around the Sun have been the source for many a scientific debate. Their current orbital properties are well understood but the planetary orbits have evolved and changed since ...

Explore how the violent birth of the Sun 4.6 billion years ago spun a cloud of dust and gas into a protoplanetary disc, shaping the orbits of every planet, asteroid, and comet in our solar system.

Launius, Roger D., editor. 2013. Exploring the Solar System: The History and Science of Planetary Exploration. New York, NY: Palgrave Macmillan. In Palgrave Studies in the History of Science and ...

Astronomers surveying the outer solar system have revealed that a rare object far beyond Neptune is moving in sync with the eighth planet in an unexpected way. Called 2020 VN40 and first discovered in ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. 2023 KQ14, nicknamed “Ammonite,” is a trans-Neptunian object ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...