The European Space Agency (ESA) is an international organization with 18 member states headquartered in Paris, France with the purpose of combining talent, resources and funds to undertake space programs, study Earth, the Solar System and the Universe. The annual budget for ESA is over $3.5 billion. The primary member states are Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. In addition, Canada, Hungary, Romania operate under a cooperative agreement. Estonia and Slovenia have recently entered into a cooperative agreement.

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Gaia clocks new speeds for Milky Way-Andromeda collision

ESA's Gaia satellite has looked beyond our Galaxy and explored two nearby galaxies to reveal the stellar motions within them and how they will one day interact and collide with the Milky Way – with surprising results.

Active galaxies point to new physics of cosmic expansion

Investigating the history of our cosmos with a large sample of distant 'active' galaxies observed by ESA's XMM-Newton, a team of astronomers found there might be more to the early expansion of the universe than predicted ...

Infant exoplanet weighed by Hipparcos and Gaia

The mass of a very young exoplanet has been revealed for the first time using data from ESA's star mapping spacecraft Gaia and its predecessor, the quarter-century retired Hipparcos satellite.

Researchers capture best ever evidence of rare black hole

ESA's XMM-Newton observatory has discovered the best-ever candidate for a very rare and elusive type of cosmic phenomenon: a medium-weight black hole in the process of tearing apart and feasting on a nearby star.

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