New answers tagged


Gaia is the follow-up to the Hipparcos mission, which was deactivated in 1993. So Gaia's results are decades in the making. The word "Gaia" was originally an acronym for "Global Astrometric Interferometer for Astrophysics" but as the scope of the science goals of the mission grew greatly, this became antiquated and is now obsolete. The ...


Something along these lines might work: select * from gaiadr2.gaia_source as gaia join user_name.table1 as user on gaia.source_id = user.source_id


This is usually referred to in astronomy as the "drift scan" technique, and has actually been used with ground-based telescopes since the early 1980s (e.g., McGraw, Angel, & Sargent 1980, Wright & Mackay 1981). Gibson & Hickson (1992) have a summary of work done in the 1980s and early 1990s in the Introduction section of their paper; ...


A scaled-up version of GAIA 2.0 as just a scaled-up version would be a hard sell to ESA. M-Class missions with ESA do not have a history of following that path. Instead while still trying to keep the astrometry tradition alive, it is more conceivable that ESA will accept some sort of game-changer as next mission. An infrared GAIA could well be this game-...

Top 50 recent answers are included