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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.
41 of the 118 known elements have names associated with, or specifically named for, places around the world or among astronomical objects. 32 of these have names tied to the places on Earth, and the other nine are named after to Solar System objects: helium for the Sun; tellurium for the Earth; selenium for the Moon; mercury (indirectly), uranium, neptunium and plutonium after their respective ...
Names for the Underworld and for Underworld locales from mythology, folklore and literature. Heroes and other explorers of the Underworld. Scientists and engineers associated with Pluto and the Kuiper Belt. Pioneering space missions and spacecraft. Historic pioneers who crossed new horizons in the exploration of the Earth, sea and sky.
32 of these have names tied to the Earth and the other 10 have names connected to bodies in the Solar System. The first tables below list the terrestrial locations (excluding the entire Earth itself, taken as a whole) and the last table lists astronomical objects which the chemical elements are named after. [1]
Developed by Surrey Nanosystems for space exploration purposes, this branded pigment reportedly holds the record for darkest man-made substance in the world due to its ability to absorb nearly 100 ...
This video clip shows a visualization of the three-dimensional structure of the Pillars of Creation. Closer view of one pillar. Pillars of Creation is a photograph taken by the Hubble Space Telescope of elephant trunks of interstellar gas and dust in the Eagle Nebula, in the Serpens constellation, some 6,500–7,000 light-years (2,000–2,100 pc; 61–66 Em) from Earth. [1]
Astronauts on the International Space Station, which has been in orbit for decades, have collected a stunning array of images of New Jersey. Astronauts have taken 1,000 photos of NJ from space ...
Some images also contain indications of chemical composition. All measures used on the pictures are first defined in the first few images using physical references. Following is a list of all the images contained in the Voyager Golden Record together with a description of the nature of the image and what annotations were included in them, and ...