Share this story
Close X
Switch to Desktop Site

News In Brief

Artificial comet helps scientists study solar wind

Scientists launched an artificial comet high above Earth Thursday in an experiment to study solar wind. It ''exploded like a very bright star,'' formed a 31,000-mile tail, then dissipated after 15 minutes. ''The solar wind blew this thing away very rapidly,'' NASA scientist Bob Cameron said.

About these ads

The comet first appeared at 4:32 a.m. PST, 10 minutes after two canisters of barium were released from a West German satellite about 60,000 miles over the Pacific.