Astrology, which is from Greek meaning “star” and “theory,” is an ancient belief system that claims that human affairs are correlated with the positions of celestial objects. With the aid of a telescope, anyone can study the night skies, searching for constellations and taking a closer look at the moon, stars and planets.Īstrology has a common origin with astronomy, but the two are very distinct. In fact, astronomy is one of the few sciences where amateurs can still play an active role. Not just for professionals, many amateur astronomers have contributed to important discoveries over the years. The two fields complement each other in this way: theoretical astronomy seeks to explain the observational results, and observations are used to confirm theoretical results. Theoretical astronomy uses computer or analytical models to describe astronomical objects and phenomena. In the 20th century, the field of professional astronomy was divided into the two branches of “observational” and “theoretical.” Observational astronomy focuses on acquiring and analyzing data, using mainly the principles of physics. Today, professional astronomy is considered synonymous with astrophysics. However, it was after the invention of binoculars and the telescope that astronomy advanced into a modern science. Astronomy is one of the oldest sciences, with astronomical artifacts found that date to very early civilizations. Astronomy is concerned with the physics and chemistry of these celestial objects as well as the formation and development of the Universe. However, both astronomy and astrology played a role in the shaping of modern culture.Īstronomy, from the Greek words “star” and “law,” is officially the study of celestial objects, including stars, planets, and galaxies, and phenomena that originate outside the Earth’s atmosphere. Eventually, astronomers distinguished themselves as scholars of the scientific field of astronomical objects, without regard to the astrological speculation of the heavenly bodies. Beginning around the time of the Renaissance and up to the 18th century, astronomy slowly began to diverge from astrology. Both began with the desire for divinatory knowledge, as well as to be able to predict future events. may be FOR SALE, Click here to make an offer!!!Īstronomy and astrology were often indistinguishable prior to the modern era. Home | Astronomy | Telescopes | Binoculars | Astrology | Psychic Readings | Tarot Cards | Business Directory DOI: 10. Astronomy Telescopes Binoculars Astrology Psychic Readings Tarot Cards ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): How Do Dense Core Properties Affect the Multiplicity of Protostars? The Astrophysical Journal, Volume 931, Number 2. So, we are excited to focus the next stage of our research on this area using JCMT and ALMA.” Magnetic fields may suppress the fragmentation in dense cores. LIU Tie, corresponding author of the study and lead for the ALMA data, said, “As for future work, we have yet to look at the effect of magnetic fields in our analysis. With ALMA providing unprecedented sensitivity and resolution, we can do similar studies on a much larger sample of dense cores to better understand star formation.” LIU Sheng-Yuan, a co-author of the study, said, “JCMT has proven to be a great tool for uncovering these stellar nurseries for ALMA follow-up. LUO said, “In a word, we found that binary/multiple stars tend to form in denser and more turbulent molecular cores in this study.” Our findings indicate that binary/multiple stars form in more turbulent cores.” Ken’ichi Tatematsu, who led the Nobeyama observations, said, “These Nobeyama observations provide a good measurement of turbulence levels in dense cores. student from SHAO and the first author of the study, said, “Denser cores are much easier to fragment due to the perturbations caused by self-gravity inside molecular cores.”Īfter observing 49 cores in the N2H+ (J=1-0) molecular line using the Nobeyama 45-meter telescope, the team found that N2H+ line widths for cores forming binary/multiple are statistically larger than those of cores forming single stars. However, there is little difference in the sizes of various cores. To their surprise, they learned that cores forming binary/multiple stars show greater H2 gas density and mass than those single forming stars. Researchers also estimated the physical characteristics of these dense cores- such as size, gas density, and mass- from the JCMT observations. The ALMA observations revealed about 13 dense cores giving birth to binary/multiple stars, whereas other cores produced single stars.
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