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  2. Radar chart - Wikipedia

    en.wikipedia.org/wiki/Radar_chart

    This spider chart represents the allocated budget versus actual spending for a given organization. A radar chart is a graphical method of displaying multivariate data in the form of a two-dimensional chart of three or more quantitative variables represented on axes starting from the same point. The relative position and angle of the axes is ...

  3. Celestial spheres - Wikipedia

    en.wikipedia.org/wiki/Celestial_spheres

    Celestial spheres. The celestial spheres, or celestial orbs, were the fundamental entities of the cosmological models developed by Plato, Eudoxus, Aristotle, Ptolemy, Copernicus, and others. In these celestial models, the apparent motions of the fixed stars and planets are accounted for by treating them as embedded in rotating spheres made of ...

  4. NASA's Eyes - Wikipedia

    en.wikipedia.org/wiki/NASA's_Eyes

    NASA's Eyes Visualization (also known as simply NASA's Eyes) is a freely available suite of computer visualization applications created by the Visualization Technology Applications and Development Team at NASA's Jet Propulsion Laboratory (JPL) to render scientifically accurate views of the planets studied by JPL missions and the spacecraft used in that study.

  5. Star formation - Wikipedia

    en.wikipedia.org/wiki/Star_formation

    Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or " star -forming regions", collapse and form stars. [ 1 ] As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors ...

  6. Stellar classification - Wikipedia

    en.wikipedia.org/wiki/Stellar_classification

    Stellar classification. In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines.

  7. Pillars of Creation - Wikipedia

    en.wikipedia.org/wiki/Pillars_of_Creation

    The most recent visualization of the Pillars of Creation was released by NASA in June 2024. [23] It is a 3D rendering created by images from both the James Webb Space Telescope and the Hubble Space Telescope. NASA described it as "the most comprehensive and detailed multiwavelength movie yet of this star-birthing region." [24]

  8. Stellar structure - Wikipedia

    en.wikipedia.org/wiki/Stellar_structure

    Stellar structure. Cross-section of the Sun. Stellar structure models describe the internal structure of a star in detail and make predictions about the luminosity, the color and the future evolution of the star. Different classes and ages of stars have different internal structures, reflecting their elemental makeup and energy transport ...

  9. Celestial sphere - Wikipedia

    en.wikipedia.org/wiki/Celestial_sphere

    Visualization of a celestial sphere. In astronomy and navigation, the celestial sphere is an abstract sphere that has an arbitrarily large radius and is concentric to Earth.All objects in the sky can be conceived as being projected upon the inner surface of the celestial sphere, which may be centered on Earth or the observer.