Uncategorized
- Planetary Science
What whacked the inner solar system?
Planetary scientists have determined that the cavalcade of space debris that hammered the inner solar system for the first 700 million years of its existence were main-belt asteroids, not comets.
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Brains disconnect as people sleep
Rather than turning off completely during sleep, the brain shuts down communication among structures that make up neural networks.
- Physics
Transistor laser flaunts twin talents
A transistor that doubles as a laser can now operate at room temperature, bringing it to the verge of practical applications.
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19600
The recent discovery of “mature” galaxies at distances corresponding to the remote cosmic past mentioned in this article threatens more than galaxy-formation theory.
