Gaia - The Stereoscopic Survey of the Galaxy

HD 1080p/30fps

Gerry Gilmore
Host:
Charlie Conroy
Abstract:

Astrometry from space has unique advantages over ground-based observations: the all-sky coverage, relatively stable and temperature- and gravity-invariant operating environment delivers precision, accuracy and sample volume several orders of magnitude greater than ground-based results. Even more importantly, absolute astrometry is possible. The European Space Agency Cornerstone mission Gaia is delivering that promise. Gaia provides 5-D phase space measurements, 3 spatial coordinates and two space motions in the plane of the sky, for a representative sample of the Milky Way’s stellar populations (over 1 billion stars, being ~1% of the stars over 50% of the volume). Full 6-D phase space data is delivered from line-of-sight (radial) velocities for the 300million brightest stars. These data make substantial contributions to astrophysics and fundamental physics on scales from the Solar System to cosmology. Deriving full value requires reliable supplementary information, especially on stellar chemical abundances. The Gaia-ESO Public Spectroscopic Survey is an example of such complementary projects, with VLT spectra for 100,000 stars. Gaia-ESO uses very many abundance analysis methods to determine both random and systematic uncertainties in stellar abundances. An overview of Gaia-ESO and some of the challenges in what one can believe will be given.

[hubertheiser]

Great job, explaining all the technical complexities of such a mission in way, a layman can understand it. Thank you very much in deed!

[BartAlder]

Newton became Warden of the Royal Mint and also Master of the Mint which is a government appointed role intended to protect coinage against forgery. That's not 'becoming a banker'. It's like confusing the person in charge of security at an art gallery for a painter.

[marc-andrebrunet]

🎯The Data is so Beautiful that I Want to Become an Astronomer Now !... Every slide is a WoW !📊📈📉

[BartAlder]

1:06:58 Unlike Henry VIII, Newton was not alive in either the 1400's or the 1500's. The claim he was alive at the time of Henry VIII or Mary or Elizabeth I is just plain wrong.

Elizabeth I died in 1603. Newton was born forty years later in 1643. He'd have needed a time machine to be a contemporary of Henry VIII or Mary or Elizabeth I. None of the Tudors were ever Newton's monarch.

Newton was instead six years old when Charles I lost his head in 1649. He was ten when Cromwell's Civil War left Cromwell as Lord Protector. He was about to turn 15 when Cromwell died and then came the restoration of the Stuarts to the throne.

The question which led to this weird, ahistorical reply from the speaker was about Newton's religion, about which quite a bit is known. He was virulently anti-Catholic, unsuccessfully trying to get any and all papists thrown out of Trinity College. He was not a protestant, he treated existing Christian theology much as he treated people's work in science: he went to the source and studied it and so he ignored all conventional theology and drew his own conclusions from the Bible (which he believed contained a code). He wasn't catholic, he wasn't any organised religion. He had his own thing going on.

[Statking]

Throat clearing distracting could not finish. Shame seemed good otherwise

[davidmckell]

One of the endocyrinated Gaia practitioners has became an extremist. Fix it. Or shut down.

[silberlinie]

Eine bemerkenswert unkonventionelle Gruppe von Zuhörern.
Zu welcher Bevölkerungsgruppe sind diese Menschen zu zuordnen?

[rayagoldendropofsun]

Harvard Smithsonian !
This U should known !
If GAS BONDING is a FACT, Gravity/black holes are not !

All downward falling motion, including Newton's apple ! Begins when rising gas molecules becomes trapped gas molecules, known as GAS BONDING, which take on a state of solid mass, blocking out its electrons motion, it's fire power, thus becomes ENERGY LOCK lifeless gas molecules, and falls downward in real time, following it's Electrons Unlimited Potential Velocity, at the speed of light, connecting with the earth ENERGY CONSERVATION SYSTEM, establishing a downward falling path, for trapped lifeless gas molecules/solid objects only.

Equating the above FACT with the physical universe, same as Einstein's E = MC2 equates with the physical universe.

E = ENERGY = MM = MOLECULE MOTION = Molecules in motion within star flames earth gases birds and balloons plains and rocket's, even us humans rise from molecules in motion, creating an ENERGY FLOW, the ruling force of the universe.

M = MASS = GB = GAS BONDING = Gas Bonding take on a state of solid mass, blocking out its electrons motion, it's fire power, thus becomes ENERGY LOCK lifeless gas molecules, and falls downward in real time.

C2 = LIGHT SPEED = E = ELECTRONS = Electrons Unlimited Potential Velocity, at the speed of light, connects with the earth ENERGY CONSERVATION SYSTEM, establishing a downward falling path, for trapped lifeless gas molecules/solid objects only.

Gravity is a mythical concept that's mentally applied, guaranteeing results to it's point of origin, the BRAIN !