In a primary research article, you will typically see many or all of the following elements clearly presented:
The presence of these components indicate that the author is presenting new data and ideas.
Article Link Extraterrestrial Cause for the Cretaceous-Tertiary Extinction
Look into the author's authority: Luis W. Alvarez
Is the publication Science Magazine any good?
Article Link Dino-Killing Asteroid Hit Just the Right Spot to Trigger Extinction
Author: Michelle Z. Donahue
Is the publication National Geographic any good?