After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...

Vega provided the first telescopic evidence of a disk of planet-forming material, but there are no planets to be found around ...

influenced their paths early in the solar system's history. Related Stories Scientists discover the closest Earth-sized ...

Our solar system consists of Sun and celestial bodies bound to it by gravity, including planets, moons, asteroids, and comets ...

The 7 fastest planets in the solar system, ranked by their orbital speeds around the Sun, are as follows: Mercury is the fastest planet in our solar system, orbiting the sun at an average speed of 47.

Fastest Known Planetary System May Have Been Pushed by Our Galaxy’s Supermassive Black Hole ...

A team of astronomers has uncovered an Earth-like planet orbiting a star located 4,000 light years away from the solar system ...

Astronomers are investigating the possibility of a hidden ninth planet beyond Neptune, which could explain unusual orbital patterns in the Kuiper Belt.

A new study suggests that the planet’s icy interior and liquid ocean could be insulated with a three-to-six-mile-thick layer ...

It would depend on a lot, say our readers, from how big it was to the route it took - but it could have significant ...

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