There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

Join Chris Tiu and Shaira Diaz as they share a creative memory hack that will help you master the order of the planets in no time! Watch 'iBilib' Sundays at 9:35 AM on GMA Network, hosted by Chris Tiu ...

Siraj’s Planet Y search started about a year ago when he was trying to find out whether the shape of the Kuiper Belt is flat.

A planetary conjunction is an astronomical event in which at least two planets – sometimes more – appear to our vantage from Earth to be close together in the sky. Both Venus and Jupiter are making ...

Most planet-forming disks have warps that can lead to planets on inclined orbits, which could explain where the tilt of Earth's orbit came from. The origin of the differing tilts in the orbits of the ...

(CNN) — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have ...