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Animated 3D map of the nearest stars, centered on the Sun. 3D red green glasses are recommended to view this image correctly. A radar map of the distances ( ) and positions ( ) of all known stellar bodies or systems within 9 light years (ly) (for within 12 ly see this map).
The exact distance between the Solar System and the Galactic Center is not certain, [14] although estimates since 2000 have remained within the range 24–28.4 kilolight-years (7.4–8.7 kiloparsecs). [15] The latest estimates from geometric-based methods and standard candles yield the following distances to the Galactic Center:
Each spot is a galaxy, consisting of billions of stars. The light from the smallest, most redshifted galaxies originated nearly 13.8 billion years ago. The comoving distance from Earth to the edge of the observable universe is about 14.26 gigaparsecs (46.5 billion light-years or 4.40 × 10 26 m) in any direction.
Estimated an approximate distance of 13 billion lightyears from Earth Star or protostar or post-stellar corpse (detected as a star) WHL0137-LS (Earendel) z = 6.2 ± 0.1 (12.9 G ly) Most distant individual star detected (March, 2022). [83] [84] Previous records include SDSS J1229+1122 [85] and MACS J1149 Lensed Star 1. [86] Star cluster: The ...
In Meteorologica, Aristotle (384–322 BC) states that the Greek philosophers Anaxagoras (c. 500 –428 BC) and Democritus (460–370 BC) proposed that the Milky Way is the glow of stars not directly visible due to Earth's shadow, while other stars receive their light from the Sun, but have their glow obscured by solar rays. [72]
The European Space Agency's Gaia mission, launched 19 December 2013, is expected to measure parallax angles to an accuracy of 10 microarcseconds for all moderately bright stars, thus mapping nearby stars (and potentially planets) up to a distance of tens of thousands of light-years from Earth. [17]
The distances to star clusters can be estimated by using a Hertzsprung–Russell diagram or colour–colour diagram to calibrate the absolute magnitudes of the stars, for example fitting the main sequence or identifying features such as a horizontal branch, and hence their distance from Earth.
The Bayer designation for this star system, Zeta (ζ) Reticuli, originated in a 1756 star map by the French astronomer Abbé Nicolas-Louis de Lacaille. [11] Subsequently, the two stars received separate designations in the Cape Photographic Durchmusterung , which was processed between 1859 and 1903, then in the Henry Draper Catalogue ...
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