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.
Scientists have uncovered the first robust evidence of a black hole and neutron star crashing together while orbiting in an oval path, challenging long-standing assumptions about cosmic pair formation.
Most neutron star-black hole pairs are expected to adopt circular orbits long before merging, their orbits slowly rounded out by the constant emission of gravitational waves over millions of years.
Far from the warmth of any star, moons orbiting rogue gas giants might harbor oceans of liquid water—and potentially complex life—for billions of years.
Liquid water is considered essential for life. Surprisingly, however, stable conditions that are conducive to life could exist far from any sun.
Look up on a clear night and you'll see the streaks of our modern satellite networks. What you don't see is the growing fallout for the atmosphere that keeps us alive.
A wave of satellite launches and reentries is changing the chemistry and physics of the middle and upper atmosphere. Studies warn of ozone depletion, stratospheric heating, and new metal aerosols from burning spacecraft.
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