Astronomers have uncovered evidence of a bizarre, potentially historic discovery: the first moon ever detected beyond our ...

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 ...

Scientists may add a new dwarf planet to the official roster of our solar system. The distant, icy body, provisionally dubbed ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Theorbits of Jupiter, Saturn, Uranus and Neptune may have been altered ...

For the inner four planets in this solar system, each planet orbits the sun three times for every two orbits of the planet immediately to its outside. For the fourth, fifth and sixth planets, they ...

'We haven't stopped exploring.' ...

EVANSTON, Ill. — Except for the fact that we call it home, for centuries astronomers didn’t have any particular reason to believe that our solar system was anything special in the universe. But, ...

Computer simulations have revealed a plausible explanation for a phenomenon that has puzzled astronomers: Rather than occupying orbits at regular distances from a star, giant gas planets similar to ...

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 ...

A new discovery finds that, even in “pristine” solar systems, planets exhibit a bit of a tilt. Scientists have long puzzled over why all of the planets in Earth’s solar system have slightly slanted ...

A six-planet solar system around the star HD110067, a near sun-like star roughly one hundred light years away, has stunned scientists by its rarity. In other words, there are many stars that have ...