Can Uniformly Dense Sphere in Vacuum Rotate on Two Axes Simultaneously?
Summary A rigid body’s orientation in space is always described by a single angular velocity vec…
Summary A rigid body’s orientation in space is always described by a single angular velocity vec…
Galaxies can suddenly stop forming stars when their gas supply is disrupted or exhausted. Powerf…
A supermassive black hole that "wakes up" after 100 million years of silence, such as …
Summary Saturn’s deep interior spins with a period near 10h 33m (± ~1–2 min) as inferred from Ca…
Dark energy may appear stronger in some regions of space due to variations in cosmic expansion, …
Summary Galaxies are threaded by weak magnetic fields (~a few microgauss) that align with spiral…