An international team of astronomers has discovered eight new extrasolar planets, bringing to nearly 80 the number of planets found orbiting nearby stars. The latest discoveries, supported by the ...

Add Yahoo as a preferred source to see more of our stories on Google. An orange star is orbited by six planets, each a different color. their orbits are outlined with white circles. Astronomers have ...

Astronomers are racing to explain peculiar orbits of faraway objects at the edge of our solar system. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

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 ...

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 ...

A study recently submitted to The Astronomical Journal continues to search for the elusive Planet Nine (also called Planet X), which is a hypothetical planet that potentially orbits in the outer ...

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, ...

When planetary scientists look to other stars for planets beyond Earth, they don’t often turn up much that resembles our solar system. Whether it’s because of star size, detection method, or observing ...

Planets orbit their parent stars while separated by enormous distances—in our solar system, planets are like grains of sand in a region the size of a football field. The time that planets take to ...

Since the formation of the Solar System, the orbits of the planets have evolved and changed over time. While one of the most prominent ideas in the last few decades is planetary migrations and the ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...