science
Comet Lemmon nears Earth in October 2025
A comet discovered earlier this year will reach its closest point to Earth this fall. Named after the observatory where it was spotted, Comet Lemmon offers a rare viewing opportunity before it vanishes for over a millennium. Astronomers first detected it in January at the Mt. Lemmon Observatory in Arizona.
London tube stations reach extreme temperatures
Researchers have recorded temperatures as high as 42 Celsius in London Underground stations amid rising global heat. Jonathan Paul, a scientist at Royal Holloway, University of London, measures these conditions using a thermometer-equipped smartphone. Underground commuters face stifling heat with no easy escape.