Scientists have created the sharpest map ever of dark matter, revealing how this invisible substance shaped galaxies, stars, and even the conditions needed for life. When you look at the night sky, it feels complete. Stars shine, galaxies glow, and...

The Milky Way’s story is written in chemical fingerprints and stellar streams, revealing a complex history of ancient mergers and a future trajectory toward a massive collision with Andromeda. For most of human history, people saw the Milky Way as a...

New simulations of 15,000 stellar streams suggest galaxies can create features once thought to be evidence of dark matter, narrowing the search for it. For years, astronomers have looked to the long, ribbon-like stellar streams wrapping around the...

Physicists suggest hunting dark matter decay into unseen gravitons, a mechanism that may generate gamma‑ray signals via cosmic magnetic fields. Only a small fraction of the Universe’s matter can be seen directly. Roughly fifteen percent consists of...

Scientists reexamined a mysterious signal from the Milky Way’s crowded core, uncovering evidence that revives a previously disputed explanation. A fresh machine‑learning investigation has reignited the discussion over the diffuse gamma‑ray glow that...

by Ling Zhu examined over 600 000 giant stars observed by Gaia and the LAMOST telescope to reconstruct the galaxy’s dark‑matter halo. The authors proposed that the outer halo may be oriented nearly vertically relative to the disc, while the inner halo...

Scientists have built a virtual sky with 3.4 billion galaxies, allowing the Euclid mission to test its tools for probing dark matter and dark energy before real data arrives. Euclid’s Flagship mock is a single, gigantic simulated sky that turns...

feature observed in many spirals that arises from resonant interactions between stars and the rotating bar within the dark‑matter halo. The simulation shows how a Milky Way‑like galaxy and its central stellar structures change over time, comparing their...

Simulations reveal most stellar‑mass black holes in the Milky Way are likely isolated and undetectable with current methods. State‑of‑the‑art simulations indicate that more than nine‑tenths of the Milky Way’s stellar‑mass black holes travel alone,...