The Sun should be capable of eruptions that are a hundred times stronger than the strongest flare ever recorded. This is shown by an analysis of over 50,000 sun-like stars.
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A pulsar within a few thousand light-years of Earth could have accelerated electrons and positrons to the extreme energies now measured by the H.E.S.S.-Observatorymore
New all-sky survey by the MeerKAT radio telescope shows the universe as expected at large distances - unlike previous observations by other telescopesmore