User:Ujons/Evaluate an Article

Which article are you evaluating?
https://en.wikipedia.org/wiki/Kepler-9d

Why you have chosen this article to evaluate?
I chose this article because it focuses on a planetary body that is not very well constrained by data; I'm curious how the object is not only described, but how the author of the article communicates the detection methods involved in characterizing the exoplanet. My first impression was that the article is relatively detailed, but not overly so to the extent that it is not concise. The grammar could be improved slightly.

Evaluate the article
Everything in this article is relevant and mostly well organized, though there is a brief discussion of other planets in the "Host Star" section. There is a comparison made to Mercury, but it feels useful as a way to put Kepler9b's extremely close orbit into perspective. The information is up to date in the sense that all the citations are of scientific articles from around the time the planet was discovered; however, if any further study or modeling of it has been done, nothing is included. The tone is very neutral, but there don't seem to be competing perspectives about this topic to acknowledge. The references are reliable (peer reviewed publications, NASA), though a link to the extrasolar planets encyclopedia that is cited multiple times no longer works. The article is rated well, and is part of the astronomy wiki project.