Related topics: galaxies

Gaia's asteroid discoveries

Animated view of more than 14 000 asteroids in our Solar System from the catalogue in the second data release of ESA's Gaia satellite, published in 2018.

Tidal tails detected around dwarf galaxy DDO 44

By conducting deep, wide-area imaging survey of the galaxy NGC 2403 and its environment, including the dwarf satellite galaxy DDO 44, astronomers have detected tidal tails emanating from the dwarf. The finding, presented ...

Gaia's first asteroid discoveries

While scanning the sky to chart a billion stars in our Milky Way galaxy, ESA's Gaia satellite is also sensitive to celestial bodies closer to home, and regularly observes asteroids in our solar system.

Gaia clocks new speeds for Milky Way-Andromeda collision

ESA's Gaia satellite has looked beyond our Galaxy and explored two nearby galaxies to reveal the stellar motions within them and how they will one day interact and collide with the Milky Way – with surprising results.

Enormous dwarf satellite galaxy of Milky Way discovered

Using data from ESA's Gaia spacecraft, astronomers have discovered a new Milky Way satellite in the constellation Antlia. The newly found dwarf galaxy, named Antlia 2, is several times larger when compared to other systems ...

The dance of the small galaxies that surround the Milky Way

An international team led by researchers from the IAC used data from the ESA satellite Gaia to measure the motion of 39 dwarf galaxies. This data gives information on the dynamics of these galaxies, their histories and their ...

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