"probing distant radio waves?"
How is it possible to probe distant radio waves? Surely they have to reach your antenna first.
Astronomers may have stumbled upon four exoplanets when surveying distant red dwarf stars using only low-frequency radio waves. An international team of researchers led by the University of Leiden, the Netherlands, observed 19 M-type stars - ranging from 13 to 156 light-years away - using the Low Frequency Array (LOFAR), the …
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