The science of discovery
Space · Earth · Science
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The 100 km Kármán line is a 1960 convention, the physics gives different answers depending on the question, and the band in dispute now has customers and weapons in it.
A visual search of ultra-deep VST mosaics found 47 dwarf-galaxy candidates where only four were catalogued, exposing both the power and the biases of by-eye discovery.
Zircon dating moves the buried Ames impact in Oklahoma to about 370 million years ago, close in time to the Late Devonian mass extinction, UT Austin researchers report.
The protective caps on human chromosomes shorten by 50 to 100 base pairs every time a cell divides, and once they run out the cell either sleeps forever or self-destructs. The same countdown that ages tissue is one of the body's strongest defences against cancer.
Two space powers deepen ties on everything from solar storms to lunar missions, signaling a shift toward shared responsibility for Earth's orbital environment.
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