Astronomers have mapped the "Alfvén surface" where the solar wind escapes the Sun's magnetic grasp
Sandeep K S
Dec 14, 2025
1 min read
Scientists have mapped the Alfvén surface, the ‘point of no return’ where solar wind escapes the sun's grasp. Using data from 20 maps, confirmed by NASA's Parker Solar Probe, this dynamic boundary changes with solar activity, enhancing space weather predictions and offering insights into the behavior of other stars.
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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