Is Sagittarius A* a supermassive black hole, or something stranger?
Sandeep K S
2 hours ago
1 min read
Exploring the Galactic Center: A comparison of dark matter and traditional black hole models, highlighting a potential fermionic dark matter core and its implications for understanding near-relativistic stellar orbits and the galaxy's rotation curve.
SpaceX is moving its human spaceflight operations away from the historic Pad 39A. A massive crane signals the change as the company pivots to Starship.
For years, Launch Pad 39A at Kennedy Space Center has been the crown jewel of American spaceflight—hosting Apollo 11, the Space Shuttle, and SpaceX's return of astronauts to orbit. But in 2025, the pad went silent for crewed missions.
Earth's magnetic poles don't just swap overnight. New evidence reveals they can wander in chaos for 70,000 years, leaving the planet exposed.
Deep beneath our feet, the Earth's outer core of liquid nickel-iron churns, generating the magnetic field that shields us from cosmic radiation. But this shield isn't permanent. Every so often, the poles flip.
Astronomers are building a map of the universe using gravitational waves. Their first targets? Two supermassive black hole binaries named Rohan and Gondor.
In 2023, NANOGrav heard the "hum" of the universe—a background of gravitational waves created by merging supermassive black holes. Now, they are learning to pick out individual voices from the choir.
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