New Hubble and Gaia Data Fuel Cosmic Conundrum
Using the power and synergy of two space telescopes, astronomers have made the most precise measurement to date of the universe’s expansion rate. The results…
GAIA
New GAIA Data Reveal Relics of Merger Events in the Milky Way
University of Groningen astronomers have discovered relics of merger events in the Milky Way halo. Five small groups of stars appear to represent mergers with…
Hubble and Gaia Measure 3D Stellar Motion with Record Precision
Astronomers used data from Hubble Space Telescope and ESA’s Gaia satellite to directly measure the 3D motions of individual stars in a nearby galaxy, achieving…
ESA’s Gaia Satellite Reveals the Rate of Stellar Encounters with the Sun
The movements of more than 300,000 stars surveyed by ESA’s Gaia satellite reveal that rare close encounters with our Sun might disturb the cloud of…
New Gaia-ESO Research Reveals that the Milky Way Formed “Inside-Out”
New research from the Gaia-ESO Survey shows that the inner regions of the Milky Way assembled faster than the outer regions, revealing that the Milky…
ESA’s Gaia Spacecraft Ready to Create a 3D Map of the Milky Way Galaxy
Set to launch on November 20th, ESA’s Gaia spacecraft will create a highly accurate 3D map of the Milky Way Galaxy by repeatedly observing a…