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How many stars to expect in Gaia's second data release

As astronomers worldwide are preparing to explore the second data release of ESA's Gaia satellite, the Data Processing and Analysing Consortium announced just how many sources will be included in the ... read more

Gaia Spots an Enormous Ghost Galaxy Right Next Door that’s Being Dismantled by the Milky Way

An international team of astronomers found Ant 2 while going through the second data release from the Gaia spacecraft ... and have fewer stars than other galaxies. A dwarf galaxy might have only a hun... read more

Gaia reveals stars flying between galaxies

Only a small number of hypervelocity stars have ever been discovered. Now ESA’s Gaia mission has revealed 20 more. ESA’s Gaia mission is proving to be a great provider of fascinating data. Launched in ... read more

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“Unexplained” –Monster ‘Phantom’ Galaxy Discovered Hidden at Outskirts of the Milky Way: ‘Is It One of Many?’

Earlier this year, Gaia’s second data release made new details of stars in the Milky Way available to scientists worldwide. The researchers behind the current study – from Taiwan, the UK ... read more


Astronomers Find Possible Elusive Star Behind Supernova

Astronomers may have finally uncovered the long-sought progenitor to a specific type of exploding star by sifting through NASA Hubble Space Telescope archival data ... leader of the second team. "Astr... read more

Tomorrow's Star Map Release Could Revolutionize Our Understanding of Astronomy

Astronomers from the European Space Agency’s Gaia mission will release the biggest map of our galaxy ever tomorrow, using data collected by the Gaia space telescope. That includes 1.7 billion stars .. ... read more

Gaia creates richest star map of our Galaxy—and beyond

Explore further: How many stars to expect in Gaia's second data release More information: A series of scientific papers describing the data contained in the release and their validation process will a... read more

Gaia mission releases map of more than a billion stars – here’s what it can teach us

However we already knew the radial velocity of less than 400,000 of these stars – measured from the ground by many different surveys. Gaia’s second data release includes information on sky positions a... read more

ESA’s Gaia Mission Releases Catalog of Nearly 1.7 Billion Stars

It included the position and brightness for 1.1 billion stars, but distances and motions for just the brightest two million stars. The second data release ... Jansen, Gaia mission manager at ESA. “Sci... read more

Enormous ‘ghost’ galaxy spotted hiding next to the Milky Way

The ESA’s Gaia mission has produced the richest star catalogue to date, including high-precision measurements of nearly 1.7 billion stars and revealing previously unseen details of our home galaxy. Ea... read more

Star-mapping mission shows Milky Way to be larger than thought

"To me, this is the most exciting part of this first data release." A second ... Gaia discoveries of transient events like supernovae (exploding stars) is already in operation. According to Brown, man... read more

Swarm of Faint Dwarf Galaxies Orbit the Milky Way –“Many More Hidden, Yet to Be Discovered”

Before the second release of data from the Gaia satellite, it was not possible to perform such measurements for 29 of the galaxies analyzed by the team. The researchers found that many of them are ... read more



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