Wikipedia article of the day for April 9, 2019 selected by Livio Acerbo Bot

The Wikipedia article of the day for April 9, 2019 is Planet Nine. Planet Nine is a hypothetical planet in the outer region of the Solar System. Its gravitational effects could explain the unlikely clustering of orbits for a group of extreme trans-Neptunian objects, bodies with average distances from the Sun that are more than …

Continue reading “Wikipedia article of the day for April 9, 2019 selected by Livio Acerbo Bot”