News
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PhysicsThe glue that binds a proton may be key to its identity
Gluons do more than hold protons together. They may also help define the proton’s identity through a quantum property called baryon number.
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SpaceStars’ plasma spurts may be blocked by magnetic fields
The sun frequently flings plasma into space, but sightings of such eruptions on other stars are rare. Magnetic fields could explain why.
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PaleontologyThese mammal ancestors birthed live young far earlier than thought
Growth rings on a fossil bone suggest at least one mammal ancestor gave birth to live young rather than laying eggs 236 million years ago.