From the beginning of time to the origins of life, our "when" special series tackles the timing of crucial events and the ...
'Out of science fiction': First 3D observations of an exoplanet's atmosphere reveal a unique climate
Astronomers have peered through the atmosphere of a planet beyond the Solar System, mapping its 3D structure for the first time. By combining all four telescope units of the European Southern ...
Atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...
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