... Tonight's Sky . ... Observing . ... Southampton researchers find a т??glitchт?? in pulsar т??glitchт?? theory . ... Researchers from the University of Southampton in the United Kingdom have called into question a 40-year-old theory explaining the periodic speeding up, or т??glitching,т?? of pulsars. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...