Star

Cosma / Communication / Knowledge / Realm / Physical / Universe / Planetary System / Star

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Introduction1

Guide to Stars & Galaxies (Telescope.org)

Dictionary

star : a self-luminous gaseous spheroidal celestial body of great mass which produces energy by means of nuclear fusion reactions — Webster

OneLook, Free Dictionary, Wiktionary

Thesaurus

Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords

Encyclopedia

Star is a luminous sphere of plasma held together by its own gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye from Earth during the night, appearing as a multitude of fixed luminous points in the sky due to their immense distance from Earth. Historically, the most prominent stars were grouped into constellations and asterisms, the brightest of which gained proper names. Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. However, most of the stars in the Universe, including all stars outside our galaxy, the Milky Way, are invisible to the naked eye from Earth. Indeed, most are invisible from Earth even through the most powerful telescopes. — Wikipedia

Stars (Eric Weisstein’s World of Astronomy, Wolfram Research)
David Darling’s Internet Encyclopedia of Science
Encyclopædia Britannica

Portal

Stars Reference (National Geographic)
Star Portal (Wikipedia)

Search

Stars (Wolfram Alpha)

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Innovation

Science

Stellar Astronomy is the study of stars and stellar evolution, and it is fundamental to our understanding of the Universe. The astrophysics of stars has been determined through observation and theoretical understanding; and from computer simulations of the interior. Star formation occurs in dense regions of dust and gas, known as giant molecular clouds. When destabilized, cloud fragments can collapse under the influence of gravity, to form a protostar. A sufficiently dense, and hot, core region will trigger nuclear fusion, thus creating a main-sequence star. — Wikipedia

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Preservation

History

History of Stars (Universe Today)

Quotation

Quotations Page

Library

WorldCat, Library of Congress, UPenn Online Books, Open Library

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Participation

Education

Stars & Star Clusters (Ask an Astronomer, Cornell University)
Stars (Cosmos4Kids)

Course

Crash Course Astronomy (YouTube)

OER Commons: Open Educational Resources

Community

News

Science Daily, Phys.org, NPR Archives

Book

ISBNdb

Government

Document

USA.gov

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Expression

Fun

Poem

OEDILF: The Omnificent English Dictionary In Limerick Form

Music

Song Lyrics

returntotop


More News …

Stars News -- ScienceDaily News about Stars. Read science articles and see images on the birth of monstrous stars, brown dwarfs and red giants. Consider stellar evolution and more.

  • Extraterrestrial stone brings first supernova...
    on May 16, 2022 at 12:17 pm

    The extraterrestrial Hypatia stone found in Egypt could be the first tangible evidence on Earth of a supernova type Ia explosion. These rare supernovas are some of the most energetic events in the universe. If the hypothesis is correct, Hypatia would be a 'forensic' clue of an epic cosmic story started sometime in the early formation of our solar system.

  • Explosion on a white dwarf observed
    on May 12, 2022 at 1:26 pm

    When stars like our Sun use up all their fuel, they shrink to form white dwarfs. Sometimes such dead stars flare back to life in a super hot explosion and produce a fireball of X-ray radiation. A research team has now been able to observe such an explosion of X-ray light for the very first time.

  • Researchers reveal the origin story for...
    on May 11, 2022 at 2:27 pm

    After running simulations on the world's most powerful supercomputer, an international team of researchers has developed a theory for the nuclear structure and origin of carbon-12, the stuff of life. The theory favors the production of carbon-12 in the cosmos.

  • Astronomers find 'gold standard' star in Milky Way
    on May 10, 2022 at 7:14 pm

    In our sun's neighborhood of the Milky Way Galaxy is a relatively bright star, and in it, astronomers have been able to identify the widest range of elements in a star beyond our solar system yet.

  • Hyperfast white dwarf stars provide clues for...
    on May 6, 2022 at 3:33 pm

    Scientists have used computer modeling to show how a hypothesized type of supernova would evolve on the scale of thousands of years, giving researchers a way to look for examples of supernovae of this model, known as 'D6.'


Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Researchers reveal the origin story for...
    on May 11, 2022 at 3:03 pm

    With the help of the world's most powerful supercomputer and new artificial intelligence techniques, an international team of researchers has theorized how the extreme conditions in stars produce carbon-12, which they describe as "a critical gateway to the birth of life."

  • Search reveals eight new sources of black hole...
    on May 2, 2022 at 4:40 pm

    Scattered across our Milky Way galaxy are tens of millions of black holes—immensely strong gravitational wells of spacetime, from which infalling matter, and even light, can never escape. Black holes are dark by definition, except on the rare occasions when they feed. As a black hole pulls in gas and dust from an orbiting star, it can give off spectacular bursts of X-ray light that bounce and echo off the inspiraling gas, briefly illuminating a black hole's extreme surroundings.

  • Study inspects properties of four galactic open...
    on April 26, 2022 at 1:10 pm

    Using data from ESA's Gaia space observatory, astronomers from the Istanbul University in Turkey have inspected four galactic open clusters. Results of this research, available in a paper published April 16 on the arXiv pre-print repository, deliver important insights into the properties of these objects.

  • Hubble observations used to answer key exoplanet...
    on April 25, 2022 at 2:15 pm

    Archival observations of 25 hot Jupiters by the NASA/ESA Hubble Space Telescope have been analyzed by an international team of astronomers, enabling them to answer five open questions important to our understanding of exoplanet atmospheres. Amongst other findings, the team found that the presence of metal oxides and hydrides in the hottest exoplanet atmospheres was clearly correlated with the atmospheres' being thermally inverted.

  • Scientists find elusive gas from post-starburst...
    on April 25, 2022 at 1:00 pm

    Scientists have discovered that post-starburst galaxies condense their gas rather than expelling it, begging the question: What's actually keeping them from forming stars?

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Adventures

Explore related posts on Cosma

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Physical

“Fundamentals”
Law (Constant) Relativity
Force Gravity, Electromagnetism (Light, Color)
Matter (Microscope) Molecule, Atom (Periodic Table), Particle

“Space”
Universe (Astronomical Instrument)
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon

Our Neighborhood
Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid

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Notes

1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.