Astronomers may have finally put a number on one of our galaxy’s slipperiest questions: where the Milky Way’s physical boundary really ends.

They slip through your skin, your walls, and the whole Earth without leaving a mark. Neutrinos earn the nickname “ghost particles” because they almost never interact with anything. Yet those rare ...

For the first time, an international team of astronomers has identified a clear boundary of the Milky Way’s star-forming disk ...

NASA is preparing to turn the center of our own galaxy into a precision test bed, using the Nancy Grace Roman Space Telescope to build the most detailed infrared map of the Milky Way ever attempted.

An international team has mapped the Milky Way’s star-forming boundary at about 35,000 to 40,000 light-years from its center using stellar age measurements and galaxy simulations. The work revealed a ...

The Milky Way does not come with a clean outer line. Its disc does not stop the way a coastline does. It fades, becoming ...

How far the Milky Way's disc extends has long been difficult to define — it doesn't end sharply, but fades away gradually at its outer edges. Now, for the first time, an international team of ...

Scientists have identified the precise edge of the Milky Way's star-forming disc by studying the ages of over 1,00,000 stars.

The galaxy our planet inhabits is called the Milky Way for the simple reason that, as seen from our world, its impossible-to-count collection of stars looks like a band of milky white light. In all ...

Scientists map frozen water across the Milky Way, revealing vast “interstellar glaciers” that may help seed new planets and ...