"We have never seen anything like this in the 24 years we have studied the supermassive black hole," researcher Andrea Ghez said.
The two balloon-like structures stretch hundreds of light-years and are thought to have formed in a violent eruption seven million years ago.
Astronomers found a "runaway star," dubbed PG 1610+062, in the outer halo of the Milky Way.
Scientists are now trying to work out what caused the mystery burst .
Scientists found the enormous black hole after spotting an "unusual" object at the core of a bright galaxy cluster about 700 million light years from Earth.
Japanese researchers propose new plan to hunt down our galaxy's "isolated black holes."
The three planets are among the smallest and closest exoplanets found to date, according to astronomers.
Astronomers have cast new light on a huge, empty expanse of space that surrounds our galaxy known as the Local Void.
Merger with Gaia Enceladus has allowed scientists to find the original stars from our galaxy's formation.
The exploding star system is located around 7,500 light years away in the constellation Carina (The Ship's Keel.)
Scientists believe there are more pieces of plastic in the ocean than stars in the Milky Way.
Harvard's Ana Bonaca says there is evidence of a "dark substructure" in the Milky Way's halo.
The collision took place 10 billion years ago, when the universe was just three or four billion years old.
The observations offer "a resounding confirmation" of the supermassive black hole long-believed to be lurking at the heart of our galaxy.
The scene shows a vast, colorful cloud of gas and dust dotted with numerous bright young stars.
Researchers used the European Space Agency's star-mapping satellite to make a stunning discovery about the Milky Way.
The galaxy belongs to a recently discovered, rare and unusual class of stellar systems known as ultracompact dwarfs.
The image reveals in incredible detail a fiery region surrounding the supermassive black hole that lies at the heart of the Milky Way.
The image confirms baby planets slice through their host star's dusty disks, leaving holes and rings in their wake.
Diamonds are an astronomer's best friend.
"It was surprising, but you like to be surprised in science."
The event horizon is the point of no return beyond which nothing, not even light, can escape the immense gravitational pull of the black hole.
Mark Heyer took 20 years of radio telescope data to create the composition.