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A European space telescope that is using a technique known as astrometry to provide a precise three-dimensional map of more than one billion stars in the Milky Way galaxy. It was launched December 19, 2013, from the Kourou launch center in French Guiana. It will measure the distances to stars and plot their motions across the sky, as well as providing basic information about the stars themselves. It also is expected to discover thousands of exoplanets, as well as comets and asteroids in the solar system.

Radio Programs

Close Black Hole Black holes get closer February 12, 2023

Escapees The ones that got away April 16, 2022

Bubbly Surroundings New stars “bubble” to life March 31, 2022

Jhelum Stream Looping around the Milky Way June 18, 2021

Galactic Archaeology Digging into the history of the Milky Way June 17, 2021

Bright Galaxies Sniffing out some bright galaxies April 5, 2020

Moon and Aldebaran Escaping from the face of the bull August 23, 2019

Starburst The Milky Way gets busy August 18, 2019

Massive Milky Way Taking the measure of the Milky Way June 24, 2019

Mergers Giant galactic mergers February 14, 2019

Starry Treats A bag of goodies for astronomers December 22, 2018

Featured Images

Gaia view of the Milky Way, 2020

A Billion Stars May 28, 2020

Messier 2

Spicy Cluster November 29, 2019