Sometime in the next 5 billion years, our Milky Way galaxy will smash into the Andromeda galaxy. This galaxy is our nearest neighbour, a mere 2.5 million light years away—practically intergalactic spitting distance.
What will happen when these giants collide depends on which galaxy's packing the most weight.
"We used to think the Andromeda galaxy was three to four times larger than the Milky Way," says Dr. Prajwal Kafle, an astrophysicist with the UWA node of the International Centre for Radio Astronomy Research. "If you look in any textbook, that's what you'll see."
Well, the textbooks need updating.
"We discovered the weight of Andromeda galaxy is almost on par with the weight of the Milky Way galaxy," Prajwal says
Continued...
Source
What will happen when these giants collide depends on which galaxy's packing the most weight.
"We used to think the Andromeda galaxy was three to four times larger than the Milky Way," says Dr. Prajwal Kafle, an astrophysicist with the UWA node of the International Centre for Radio Astronomy Research. "If you look in any textbook, that's what you'll see."
Well, the textbooks need updating.
"We discovered the weight of Andromeda galaxy is almost on par with the weight of the Milky Way galaxy," Prajwal says
Continued...
Source