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How Gaia is Revolutionizing our View of the Milky Way

Pro ISSI Talk with Michael Biermann

(Center for Astronomy of Heidelberg University, Germany)

24th April 2024 –18:15h CEST

Gaia is the European Space Agency’s (ESA) major astrometry mission. I will briefly introduce the Gaia mission and its technical challenges, and present some of the scientific findings on the evolution of the Milky Way, astrophysics and other highlights made possible by Gaia.

Over the past almost ten years, Gaia has taken more than 2.4 trillion astrometric and almost half a trillion photometric measurements and recorded almost 50 billion spectra. In June 2022, the third Gaia catalogue was published, making positions, proper motions, parallaxes and many other stellar parameters available to both scientists and the public with unprecedented accuracy for more than 1.8 billion stars.

This Gaia catalogue and its successors will revolutionize astronomy, in virtually every field of research! Despite its enormous size, including nearly 1.5 billion parallaxes, 35 million radial velocities, 11 million variable stars, 800,000 binary stars, 160,000 solar system objects, and much more, the third Gaia catalogue is still only preliminary.

Pro ISSI Talk
recorded on April 24, 2024

Recorded Pro ISSI Talks

The Extraordinary First Year of Science of the James Webb Space Telescope with Dr. Antonella Nota

Billions of planets in the Milky Way: The Quest for Earth-Twins and Maybe Life with Prof. Michel Mayor

Unveiling the Mysteries of Solar Magnetic Activity: Parker Solar Probe and Solar Orbiter with Prof. Marco Velli

The First 25 Years: Genesis and Evolution of ISSI with Prof. em. Rudolf von Steiger

Space Debris – Providing the Scientific Foundation for Sustainable Use of Outer Space with Thomas Schildknecht

The Beginning and the Future of the Universe with Sabine Schindler

A Warming Indian Ocean on Planet Earth: Changes in Ocean Circulation, Sea Level with Weiqing Han

Extrasolar Planets with Julia Venturini and Interannual Variability in Sea Level with Lorena Moreira

Exploring the Earth’s Time-Variable Gravity Field using Satellite Observations with Adrian Jäggi

CHEOPS – the CHaracterizing ExOPlanet Satellite with Andrea Fortier

Philae, Landung auf dem Kometen Churyumov-Gerasimenko mit Stephan Ulamec

Cosmology Today with Bruno Leibundgut

CaSSIS - A Swiss Camera Goes To Mars with Nicolas Thomas

Extrasolar Planets: a Laboratory to Confront the Theory of Planet Formation with Observations with Christoph Mordasini

Return to Planet Earth: Understanding the Earth from Geodetic Space Observations with Kurt Lambeck

NNext Stop Jupiter! Giant Planets Exploration and the Cassini Legacy with Michel Blanc issibern 1.09K subscribers Analytics Edit video

Faltering Steps into the Galaxy with Gary Zank

Exoplanets: In Search of Terra-2 with Joachim Wambsganss

Exploring Earth's Magnetic Field using the Swarm Satellite Constellation Trio with Nils Olsen

Solar Magnetic Activity in a Nutshell, and How Stars and Exoplanets Can Help Us Understand It All with Karel Schrijver

Climate Change, Ocean Warming, Land Ice Melt and Sea Level Rise with Anny Cazenave