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Space and Stars

A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth. Other stars are visible from Earth during the night, when they are not obscured by atmospheric phenomena, appearing as a multitude of fixed luminous points because of their immense distance. Historically, the most prominent stars on the celestial sphere were grouped together into constellations and asterisms, and the brightest stars gained proper names. Extensive catalogues of stars have been assembled by astronomers, which provide standardized star designations.
For at least a portion of its life, a star shines due to thermonuclear fusion of hydrogen in its core releasing energy that traverses the star's interior and then radiates into outer space. Almost all naturally occurring elements heavier than helium were created by stars, either via stellar nucleosynthesis during their lifetimes or by supernova nucleosynthesis when stars explode. Astronomers can determine the mass, age, chemical composition and many other properties of a star by observing its spectrum, luminosity and motion through space. The total mass of a star is the principal determinant in its evolution and eventual fate. Other characteristics of a star are determined by its evolutionary history, including diameter, rotation, movement and temperature. A plot of the temperature of many stars against their luminosities, known as a Hertzsprung-Russell diagram (H--R diagram), allows the age and evolutionary state of a star to be determined.

Ancient History, Tech, and Archaeology

Ancient history is the study of the written past from the beginning of recorded human history to the Early Middle Ages. The span of recorded history is roughly 5,000 years, with Cuneiform script, the oldest discovered form of coherent writing, from the protoliterate period around the 30th century BC. This is the beginning of history, as opposed to prehistory, according to the definition used by most historians.

Astronomy, Space, and Science Videos

Science (from Latin scientia, meaning "knowledge") is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. An older and closely related meaning still in use today is that found for example in Aristotle, whereby "science" refers to the body of reliable knowledge itself, of the type that can be logically and rationally explained.

Science / Evolution / Physics

Science, evolution, and physics videos for your enjoyment.

Science / Physics/ Tech Lectures

Science Lectures

Space: Blackholes - Science Videos

Space and science videos, Blackholes are examined and discussed in this playlist, enjoy.

Science, Space, Technology, Physics, Math, and TED Videos

Science, Space, Technology, Physics, Math, and TED Videos

Space - Ambient Music

Space and Ambient Music to relax and meditate to.

Smartphones - 3 Mobile Devices - Cell Phone Technology

Smartphones 3 - Mobile Devices - Cell Phone Technology

Indie Rock 3

Indie Rock Songs

Indie Rock 2

Indie rock playlist

Short Films

Occupy Wall Street - Occupy Everywhere - Occupy Oakland

Robots

British Comedy

Physics Videos

physics videos

Politics - Save our Freedoms - Save our Rights!!

America is on a controlled spiral downhill. Our own government's goal is to have complete and total control over all of us and we are letting it happen.