Federal immigration authorities said Friday they arrested about 200 immigrants suspected of being in the country illegally in ...

Red sprites are among a class of enigmatic weather phenomena that appear over thunderstorms, known as Transient Luminous ...

While they are referred to as upper atmospheric lightning, the only thing red sprites have in common with the typical form of ...

“They appear moments after a lightning strike—a sudden reddish flash that can take a range of shapes, often combining diffuse ...

Astronomers have turned the Atacama Large Millimeter/submillimeter Array (ALMA) into a time machine to peer back in cosmic time to 1 billion years after the Big Bang.