Astrophysicists have always dreamed of running a simulation of the Milky Way that could track every single star—each orbit, ...

Astronomers measure the speed at which the solar system is hurtling through space by mapping surrounding galaxies and ...

A groundbreaking study led by Professor Tomonori Totani from the University of Tokyo analyzed 15 years of data from the Fermi telescope and reported the detection of a peculiar halo-like glow of gamma ...

Scientists have detected an unusual gamma-ray halo around our Milky Way galaxy. This signal, observed by NASA's Fermi ...

"The discovery of this stream highlights how much is still unknown about the life histories of galaxies, how the hidden ...

Three of the oldest stars in our universe have been discovered, and they were lurking right under our noses this whole time, and traveling in the wrong direction The heavenly bodies were detected by ...

Astronomers reanalyzed the chemical composition of three stars in the Milky Way's halo and found that they are between 12 and 13 billion years old. They may have also been stolen from other galaxies.

In recent years, one of the most troubling puzzles in astrophysics has grown more urgent. Scientists have realized that the universe seems to be expanding faster than expected, throwing a wrench into ...

An MIT astronomy class has found three of the oldest stars in the universe lurking right outside the Milky Way. The stars, about 30,000 light-years from Earth, are in the galaxy's "halo," the cloud of ...

Some stars in our very own Milky Way are some of the earliest ever seen, according to research published today in the Monthly Notices of the Royal Astronomical Society. The stars are in the Milky ...

The mystery of galaxies in the early Universe just got even weirder. A team of astronomers has identified a giant spiral galaxy so well-formed that it already has a stable galactic bar; a long, ...