The Busy Beaver Challenge, a notoriously difficult question in theoretical computer science, is now producing answers so ...

Not long ago, I was at the observatory in front of a telescope, staring at the spectrum of a quasar on the screen, and the ...

In the observatory's observation room, Xiao Li stared at the quasar spectrum on the telescope screen, his brow furrowed. The spectral lines, which should have been neatly arranged, now looked like ...