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Gaia Sky is an open-source astronomy visualisation desktop and VR program with versions for Windows, Linux and macOS.It is created and developed by Toni Sagristà Sellés in the framework of ESA's Gaia mission to create a billion-star multi-dimensional map of our Milky Way Galaxy, in the Gaia group of the Astronomisches Rechen-Institut (ZAH, Universität Heidelberg).
The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU). Its origin is at the barycenter of the Solar System, with axes that are intended to "show no global rotation with respect to a set of distant extragalactic objects".
The Gaia catalogues are star catalogues created using the results obtained by Gaia space telescope. The catalogues are released in stages that will contain increasing amounts of information; the early releases also miss some stars, especially fainter stars located in dense star fields. [1] Data from every data release can be accessed at the ...
The limits of observation as visualized by the Milky Way's star density map. Source: Gaia spacecraft's 2021 data release. Many projects have attempted to bridge the gap in knowledge caused by the Zone of Avoidance. The dust and gas in the Milky Way cause extinction at optical wavelengths, and foreground stars can be confused with background ...
A small observatory consisting of a 4-inch refractor and a small transit telescope was constructed by 1872. The astronomy courses were typically taught by the mathematics department and by the early 1890s, several mathematics instructors wanted to do more with astronomy. An expanded astronomy curriculum would require a new larger facility.
Center for Astrophysics | Harvard & Smithsonian: 1973 Cambridge, Massachusetts, US Cerro Armazones Observatory: 1995 Atacama Desert, Chile Cerro Tololo Inter-American Observatory: 1962 Atacama Desert, Chile Cerro Pachón Observatory: 2000 Atacama Desert, Chile Chabot Space & Science Center: 1883 Oakland, California, US Chamberlin Observatory: 1890
Gaia is a space observatory of the European Space Agency (ESA) that was launched in 2013 and is planned to operate until March 2025. The spacecraft is designed for astrometry: measuring the positions, distances and motions of stars with unprecedented precision, [5] [6] and the positions of exoplanets by measuring attributes about the stars they orbit such as their apparent magnitude and color. [7]
The pixelisation related to the H=4, K=3 projection has become widely used in cosmology for storing and manipulating maps of the cosmic microwave background. Gaia mission uses HEALPix as the basis for source identification. [9] An alternative hierarchical grid is the Hierarchical Triangular Mesh (HTM).