Hunt for Planet Nine leads to mini-worlds. by Alan Boyle on August 29, 2016 at 8:03 ... Planet Nine’s existence was proposed last year as the most elegant way to account for the orbits of ...

Scientists from Harvard University have found a method to determine whether Planet Nine, a theorized body in our solar system, could be a miniature black hole, Skip to main content.

In the innermost mini-Neptune of TOI 560, named TOI 560.01, atmospheric gas was not just leaking from the planet but was unexpectedly traveling towards the system's parent star.

First, the theory behind Planet Nine. The hypothesis of an as-yet-undetected major planet revolves around extreme trans-Neptunian objects, or ETNOs -- mini planets whose orbits around the sun ...

Astronomer Geoff Marcy of the University of California at Berkeley presented data showing that about 85 percent of planets found by NASA's Kepler space telescope are "mini-Neptunes" or "super-Earths." ...

Revised mass-radius relationships for water-rich rocky planets more irradiated than the runaway greenhouse limit. Astronomy & Astrophysics , 2020; 638: A41 DOI: 10.1051/0004-6361/201937151 Cite ...

Heads up: Five planets set to line up in night sky this week. A girl looks at the moon through a telescope in Caracas, Venezuela. (Matias Delacroix / Associated Press) By Kevin Rector Staff Writer .