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Lists of space scientists; Lists of spacecraft This page was last edited on 18 February 2025, at 07:24 (UTC). Text is available under the Creative Commons ...
Phenomena associated with stars and space. For those phenomena specifically associated with the Earth's Sun, see Category:Solar phenomena. Subcategories.
A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.
A close-up view of the center of the NGC 6505 galaxy showcases the bright Einstein ring surrounding it. - ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre, G. Anselmi, T. Li
Since 2003, Jean-Pierre Luminet, et al., and other groups have suggested that the shape of the universe may be the Poincaré dodecahedral space. Is the shape unmeasurable, the Poincaré space, or another 3-manifold? Cosmic inflation: Is the theory of cosmic inflation in the very early universe correct? If so, what are the details of this epoch?
The post 20 Cool Facts About Space We Bet You Didn’t Know appeared first on Reader's Digest. Who knows, one day you might be able to actually visit! The post 20 Cool Facts About Space We Bet You ...
This is a list of the coolest exoplanets known, specifically those with temperatures lower than −75 °C (198 K). Planets from the Solar System were also included for comparison purposes.
This interdisciplinary field encompasses research on the origin of planetary systems, origins of organic compounds in space, rock-water-carbon interactions, abiogenesis on Earth, planetary habitability, research on biosignatures for life detection, and studies on the potential for life to adapt to challenges on Earth and in outer space. [83 ...