Astronomers have looked back in time to chart exactly how our galaxy evolved
Sandeep K S
Dec 20, 2025
1 min read
The transformation of the Milky Way from its chaotic, dense beginnings 1.5 billion years ago to a stable, spiral galaxy today is illustrated through its turbulent youth, dominated by frequent mergers and star formation, transitioning to a more orderly, structured adulthood with extended outer disks and fewer collisions.
China's FAST telescope—the largest on Earth—has scoured the archives to find 19 pulsars missed by previous searches, including rare "transient" ghosts.
Pulsars (spinning neutron stars) are lighthouses of the cosmos. Most are found near the Galactic Plane, where stars are dense.
In space, fire doesn't rise. It forms a ghostly sphere that is harder to detect and harder to kill. New research aims to tame flames for the journey to Mars.
On Earth, hot air is lighter than cold air. It rises, pulling fresh oxygen in from below. This convection gives fire its familiar teardrop shape and yellow color (soot).
Jupiter's outermost moon is a battered, icy archive of the early solar system. New thermal imaging is finally peeling back its scarred surface to reveal what lies beneath.
Using the ALMA telescope, researchers analyzed thermal data to peer into the top few centimeters of Callisto's surface (regolith).
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