News
- Particle Physics
Protons contain intrinsic charm quarks, a new study suggests
The massive quarks — counterintuitively heavier than the proton itself — might carry about 0.6 percent of a proton’s momentum.
- Physics
Spiraling footballs wobble at one of two specific frequencies
Researchers simulated the path of a flying football to study how pigskins wobble and why they drift sideways.
- Planetary Science
Asteroid impacts might have created some of Mars’ sand
Roughly a quarter of the Red Planet’s sand is spherical bits of glass forged in violent impacts, new observations reveal.
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