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The Gaia Archive is a catalogue that contains positions and brightnesses for 1.7 billion stars, including distances and proper motions for more than 1.3 billion stars. [34] An outreach application, Gaia Sky, has been developed to explore the galaxy in three dimensions using Gaia data. [35]
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 Gaia catalogues are based on observations made by the Gaia space telescope. They are released in stages that contain increasing amounts of information; the early releases also miss some stars, especially fainter stars located in dense star fields. [34] Data from every data release can be accessed at the Gaia archive. [35]
Astronomers using the Gaia space telescope have located two ancient streams of stars that helped the Milky Way galaxy grow and evolve more than 12 billion years ago.
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).
A staple of the ESA's Science Doctrine is the Cosmic Vision programme, a series of space science missions chosen by the ESA to launch through competitions, similar to NASA's Discovery and New Frontiers programmes. It succeeds the Horizon 2000 and Horizon 2000+ programmes which launched notable missions such as Huygens, Rosetta and Gaia.
ESAC is the lead institution for space science (astronomy, Solar System exploration and fundamental physics) using ESA missions. It hosts the science operation centres for all ESA astronomy and planetary missions and their scientific data archives. ESA's Cebreros Station deep-space communication antennas are located nearby.
The Science Programme [1] [2] [a] of the European Space Agency is a long-term programme of space science and space exploration missions. Managed by the agency's Directorate of Science, The programme funds the development, launch, and operation of missions led by European space agencies and institutions through generational campaigns.