List of natural phenomena in the context of "Aurora"

The natural environment or natural world encompasses all biotic and abiotic things occurring naturally, meaning in this case not artificial. The term is most often applied to Earth or some parts of Earth. This environment encompasses the interaction of all living species, climate, weather and natural resources that affect human survival and economic activity.The concept of the natural environment can be distinguished as components:

• Complete ecological units that function as natural systems without massive civilized human intervention, including all vegetation, microorganisms, soil, rocks, plateaus, mountains, the atmosphere and natural phenomena that occur within their boundaries and their nature.
• Universal natural resources and physical phenomena that lack clear-cut boundaries, such as air, water and climate, as well as energy, radiation, electric charge and magnetism, not originating from civilized human actions.

In contrast to the natural environment is the built environment. Built environments are where humans have fundamentally transformed landscapes such as urban settings and agricultural land conversion, the natural environment is greatly changed into a simplified human environment. Even acts which seem less extreme, such as building a mud hut or a photovoltaic system in the desert, the modified environment becomes an artificial one. Though many animals build things to provide a better environment for themselves, they are not human, hence beaver dams and the works of mound-building termites are thought of as natural.

Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict natural phenomena. This is in contrast to experimental physics, which uses experimental tools to probe these phenomena.

The advancement of science generally depends on the interplay between experimental studies and theory. In some cases, theoretical physics adheres to standards of mathematical rigour while giving little weight to experiments and observations. For example, while developing special relativity, Albert Einstein was concerned with the Lorentz transformation which left Maxwell's equations invariant, but was apparently uninterested in the Michelson–Morley experiment on Earth's drift through a luminiferous aether. Conversely, Einstein was awarded the Nobel Prize for explaining the photoelectric effect, previously an experimental result lacking a theoretical formulation.

Nature worship, also called naturism or physiolatry, is any of a variety of religious, spiritual and devotional practices that focus on the worship of a nature deity, considered to be behind the natural phenomena visible throughout nature. A nature deity can be in charge of nature, a place, a biotope, the biosphere, the cosmos, or the universe. Nature worship is often considered the primitive source of modern religious beliefs and can be found in animism, pantheism, panentheism, polytheism, deism, totemism, shamanism, Taoism, Hinduism, some theism and paganism including Wicca. Common to most forms of nature worship is a spiritual focus on the individual's connection and influence on some aspects of the natural world and reverence towards it. Due to their admiration of nature, the works of Edmund Spenser, Anthony Ashley-Cooper and Carl Linnaeus were viewed as nature worship.

Ruins (from Latin ruina 'a collapse') are the remains of a civilization's architecture. The term refers to formerly intact structures that have fallen into a state of partial or total disrepair over time due to a variety of factors, such as lack of maintenance, deliberate destruction by humans, or uncontrollable destruction by natural phenomena. The most common root causes that yield ruins in their wake are natural disasters, armed conflict, and population decline, with many structures becoming progressively derelict over time due to long-term weathering and scavenging.

There are famous ruins all over the world, with notable sites originating from ancient China, the Indus Valley, ancient Iran, ancient Israel and Judea, ancient Iraq, ancient Greece, ancient Egypt, ancient Yemen, Roman, ancient India, sites throughout the Mediterranean Basin, and Incan and Mayan sites in the Americas. Ruins are of great importance to historians, archaeologists and anthropologists, whether they were once individual fortifications, places of worship, ancient universities, houses and utility buildings, or entire villages, towns, and cities. Many ruins have become UNESCO World Heritage Sites in recent years, to identify and preserve them as areas of outstanding value to humanity.

Albanian paganism comprises the pagan customs, beliefs, rituals, myths and legends of the Albanian people. The elements of Albanian mythology are of ancient Paleo-Balkanic origin and almost all of them are pagan. Ancient paganism persisted among Albanians, and especially within the inaccessible and deep interior – where Albanian folklore evolved over the centuries in a relatively isolated tribal culture and society – it has continued to persist, or at most it was partially transformed by the Christian, Muslim and Marxist beliefs that were either to be introduced by choice or imposed by force. The Albanian traditional customary law (Kanun) has held a sacred – although secular – longstanding, unwavering and unchallenged authority with a cross-religious effectiveness over the Albanians, which is attributed to an earlier pagan code common to all the Albanian tribes. Indeed, the Kanun contains several customary concepts that clearly have their origins in pagan beliefs, including in particular the ancestor worship, animism and totemism, which have been preserved since pre-Christian times. Albanian traditions have been orally transmitted – through memory systems that have survived intact into modern times – down the generations and are still very much alive in the mountainous regions of Albania, Kosovo, Montenegro and western North Macedonia, as well as among the Arbëreshë in Italy, the Arvanites in Greece and the Arbanasi in Croatia.

The old beliefs in sun and moon, light and darkness, sky and earth, fire and hearth, water and springs, death and rebirth, birds and serpents, mountains, stones and caves, sacrifice, and fate are some of the pagan beliefs among Albanians. The Fire (Zjarri) rituals and the Sun (Dielli) and Moon (Hëna) worship are the earliest attested cults of the Albanians. The Sun holds the primary role in Albanian pagan customs, beliefs, rituals, myths, and legends; Albanian major traditional festivities and calendar rites are based on the Sun, worshiped as the god of light, sky and weather, giver of life, health and energy, and all-seeing eye; the sunrise is honored as it is believed to give energy and health to the body. The Moon is worshiped as a goddess, with her cyclical phases regulating many aspects of Albanian life, defining agricultural and livestock activities, various crafts, and human body. The morning and evening star Venus is personified with Prende, associated with dawn, beauty, love, fertility, health, and the protection of women. The cult of the Earth (Dheu) and that of the Sky (Qielli) have a special place. The Fire – Zjarri, evidently also called with the theonym Enji – is deified in Albanian tradition as releaser of light and heat with the power to ward off darkness and evil, affect cosmic phenomena and give strength to the Sun, and as sustainer of the continuity between life and afterlife and between the generations, ensuring the survival of the lineage (fis or farë). To spit into Fire is taboo. The divine power of Fire is used for the hearth and the rituals, including calendar fires, sacrificial offerings, divination, purification, and protection from big storms and other potentially harmful events. Fire worship and rituals are associated with the cult of the Sun, the cult of the hearth (vatër) and the ancestor, and the cult of fertility in agriculture and animal husbandry. Ritual calendar fires are associated with the cosmic cycle and the rhythms of agricultural and pastoral life. Besa is a common practice in Albanian culture, consisting of an oath (be) solemnly taken by sun, by moon, by sky, by earth, by fire, by stone and thunderstone, by mountain, by water, and by snake, which are all considered sacred objects. Associated with human life, bees are highly revered by Albanians. The eagle is the animal totem of all Albanians, associated with the Sky, freedom and heroism. A widespread folk symbol is the serpent (Gjarpër, Vitore, etc.), a totem of the Albanians associated with earth, water, sun, hearth and ancestor cults, as well as destiny, good fortune and fertility. The sun, the moon, the star, the eagle (bird), the serpent, and the bee, often appear in Albanian legends and folk art.