Universe





Space technology

Science

Universe

The latest articles related to Universe

Introduction to general relativity – Astrophysical applications

Models based on general relativity play an important role in astrophysics, and the success of these models is further testament to the theory’s validity. Gravitational lensing Since light is deflected in a gravitational field, it is possible for the light of a distant object to reach an observer along two or more paths. For instance, [...]

Non-standard cosmology – Introduction

non-standard cosmology is any physical cosmological model of the universe that has been, or still is, proposed as an alternative to the big bang model of (standard) physical cosmology. In the history of cosmology, various scientists and researchers have disputed parts or all of the big bang due to a rejection or addition of fundamental [...]

Babylonian astronomy – Neo-Babylonian astronomy

Astronomy

Neo-Babylonian astronomy refers to the astronomy developed by Chaldean astronomers during the Neo-Babylonian, Achaemenid, Seleucid, and Parthian periods of Mesopotamian history. A significant increase in the quality and frequency of Babylonian observations appeared during the reign of Nabonassar (747–734 BC), who founded the Neo-Babylonian Empire. The systematic records of ominous phenomena in astronomical diaries that [...]

Theoretical astronomy – Topics of theoretical astronomy

Galaxy Formation And Evolution

Topics studied by theoretical astronomers include: # stellar dynamics and evolution; # galaxy formation; # large-scale structure of matter in the Universe; # origin of cosmic rays; # general relativity and physical cosmology, including string cosmology and astroparticle physics. Astrophysical relativity serves as a tool to gauge the properties of large scale structures for which [...]

Ultraviolet astronomy – Introduction

Ultraviolet astronomy is generally used to refer to observations of electromagnetic radiation at ultraviolet wavelengths between approximately 10 and 320 nanometres; shorter wavelengths—higher energy photons—are studied by X-ray astronomy and gamma ray astronomy. Light at these wavelengths is absorbed by the Earth’s atmosphere, so observations at these wavelengths must be performed from the upper atmosphere [...]

Astronomy – Specific subfields

Astronomy

Solar astronomy The solar system is subdivided into the inner planets, the asteroid belt, and the outer planets. The inner terrestrial planets consist of Mercury, Venus, Earth, and Mars. The outer gas giant planets are Jupiter, Saturn, Uranus, and Neptune. Beyond Neptune lies the Kuiper Belt, and finally the Oort Cloud, which may extend as [...]

Fractal cosmology – Introduction

Cosmology

fractal cosmology is a set of minority cosmological theories which state that the distribution of matter in the Universe, or the structure of the universe itself, is fractal. More generally, it relates to the usage or appearance of fractals in the study of the universe and matter. A central issue in this field is the [...]

Sounding rocket X-ray astronomy – Introduction

X-ray Astronomy

Sounding rocket X-ray astronomy involves using a sounding rocket to carry an X-ray detector to high altitudes. The first evidence of X-rays from the Sun and of an astronomical X-ray source from the Milky Way (MW), other than the Sun, was detected by a sounding rocket. These rockets have contributed significantly to our understanding of [...]

Edward L. Wright – Introduction

Microwave Astronomy

Edward L. (Ned) Wright is an American astrophysicist and cosmologist, well known for his achievements in the COBE project and as a strong Big Bang proponent in web tutorials on cosmology and theory of relativity. Wright received his ABscl (Physics in 1969) and PhD (Astronomy in 1976) degrees from Harvard University, where he was a [...]

History of astronomy – New windows into the Cosmos open

Gamma Ray Astronomy

Late in the 19th century, scientists began discovering forms of light which were invisible to the naked eye: X-Rays, gamma rays, radio waves, microwaves, ultraviolet radiation, and infrared radiation. This had a major impact on astronomy, spawning the fields of infrared astronomy, radio astronomy, x-ray astronomy and finally gamma-ray astronomy. With the advent of spectroscopy [...]

Organizational space – Introduction

Space Organizations

Organizational space describes the influence of the spatial environment on the health, the mind, and the behavior of humans in and around organizations. It is an area of scientific research in which interdisciplinarity is a central perspective. It draws from management, organization and architecture (Dale en Burrell, 2008) added with knowledge from, for instance, environmental [...]

Islamic cosmology – Introduction

Cosmology

Islamic cosmology refers to cosmology in Islamic societies. It is mainly derived from the Qur’an, Hadith, Sunnah, and current Islamic as well as other pre-Islamic sources. The Qur’an itself mentions seven heavens and a vast universe sustained by Allah. Adapted from the Wikipedia article Islamic cosmology, under the G. N. U. Free Documentation License. Please [...]









Go To Top »