Astrobiology is the study of the origins, evolution, distribution, and future of life in the universe. This interdisciplinary field requires a comprehensive, integrated understanding of biological, planetary, and cosmic phenomena. Astrobiology encompasses the search for habitable environments in our Solar System and on planets around other stars; the search for evidence of prebiotic chemistry or life on Solar System bodies like Mars, Jupiter’s moon Europa, and Saturn’s moon Titan; and research into the origins, early evolution, and diversity of life on Earth. Ever since early humans first looked skyward and imagined the stars as distant campfires, humanity has wondered if we are alone in the Universe. The ancient Greeks argued against our home planet being the only cradle for life, but lacked the technology to prove their beliefs. In the late 20th century, the near-simultaneous discoveries of the possible remains of bacterial life in a Martian meteorite, and the first planets orbiting other stars, brought the question of the existence of life beyond the Earth to the forefront of scientific endeavor. In the 21st century, the new field of Astrobiology harnesses the required technological and scientific capability to seriously address this ancient and fundamental question. Astrobiology is the study of life in the universe. The search for life beyond the Earth requires an understanding of life, and the nature of the environments that support it, as well as planetary, planetary system and stellar interactions and processes.   To provide this understanding, astrobiology combines the knowledge and techniques from many fields, including astronomy, biology, chemistry, geology, atmospheric science, oceanography and aeronautical engineering. The information can be published in our peer reviewed journal with impact factors and are calculated using citations not only from research articles but also review articles (which tend to receive more citations), editorials, letters, meeting abstracts, short communications, and case reports. The inclusion of these publications provides the opportunity for editors and publishers to manipulate the ratio used to calculate the impact factor and try to increase their number rapidly. Impact factor plays a major role for the particular journal. Journal with higher impact factor is considered to be more important than other ones.