ESA Science & Technology - News Archive
Astronomers have pondered for years why our galaxy, the Milky Way, is warped. Data from ESA's star-mapping satellite Gaia suggest the distortion might be caused by an ongoing collision with another, smaller, galaxy, which sends ripples through the galactic disc like a rock thrown into water.
A 500-day global observation campaign spearheaded more than three years ago by ESA’s galaxy-mapping powerhouse Gaia has provided unprecedented insights into the binary system of stars that caused an unusual brightening of an even more distant star.
Rather than leaving home young, as expected, stellar 'siblings' prefer to stick together in long-lasting, string-like groups, finds a new study of data from ESA's Gaia spacecraft.
Gaia's first data release was not designed to be a full database with which major scientific discoveries could be made. Instead it was foreseen much more as a set of test data that astronomers could practice on and get ready for the second release from ESA's billion-star surveyor – the one that would feature a billion parallaxes and proper...
The first data release of ESA's Gaia satellite provided a surprising number of scientific results. Yet it is nothing but a tease for what is expected from the second data release, scheduled for 25 April.