Estrela sai de Via Láctea?

https://www.theguardian.com/science/2019/nov/13/superfast-star-found-leaving-milky-way-at-1700km-per-second

Citando:
"Astronomers have spotted a star heading out of the Milky Way at more than 6m km/h (3.7m mph), or 1,700km per second, after an encounter with the supermassive black hole at the centre of the galaxy.

The star is moving so fast that in about 100m years it will exit the Milky Way and spend the rest of its life sailing alone through intergalactic space. Although it was predicted 30 years ago that black holes could fling stars out of the galaxy at phenomenal speeds, it is the first time that such an event has been recorded."

Arqueologia galáctica e perturbação na Via Láctea

https://phys.org/news/2018-09-gaia-milky.html

Estrutura da Via Láctea mais complexa?

(do que se pensava):
http://www.ibtimes.co.uk/are-stars-surrounding-milky-way-alien-space-invaders-were-they-booted-out-galaxy-1664011

Citando:
""The oscillations can be compared to sound waves in a musical instrument," the lead author of the new research, Maria Bergemann of the Max Planck Institute for Astronomy (MPIA), said. "We call this 'ringing' in the Milky Way galaxy 'galactoseismology,' which has been predicted theoretically decades ago. We now have the clearest evidence for these oscillations in our galaxy's disk obtained so far!"

The scientists studied 14 stars in two different halo structures, located on opposite ends of the Milky Way disk. The two structures, called the Triangulum-Andromeda (Tri-And) and the A13 stellar overdensities, are about 14,000 light-years above and below the galactic plane. The researchers were able to present the chemical abundance patterns of these halo stars for the first time, using the W M Keck Observatory in Hawaii."

Fotografar o buraco negro no centro da Via Láctea

De forma indirecta vai ser tentado:
https://www.theguardian.com/science/2017/feb/26/black-hole-telescope-big-as-earth-event-horizon-project-sagittarius-a

Via Láctea maior do que se pensava - Gaia

http://www.nature.com/news/detailed-map-shows-milky-way-is-bigger-than-we-thought-1.20591