Astronomy could be a scientific discipline that's the study of celestial objects (such as moons, planets, stars and galaxies), the physics, chemistry, and evolution of objects, and phenomena that originate outside the atmosphere of Earth, and as well as supernovae explosions, gamma radiation bursts, and cosmic microwave background. A connected however distinct subject, cosmology, is bothered with finding out the universe as an entire. Journal Article is sometimes called a Scientific Article, a Peer-Reviewed Article, or a Scholarly Research Article. Together, journal articles in a particular field are often referred to as The Literature. Journal articles are most often Primary Research Articles. However, they can also be Review Articles. These types of articles have different aims and requirements. Sometimes, an article describes a new tool or method. Because articles in scientific journals are specific, meticulously cited, and peer-reviewed, journal databases are the best place to look for information on previous research on your species. Without a background in the field, journal articles may be hard to understand - however, you do not need to understand an entire article to be able to get valuable information from it.