LOS ANGELES—Space startup Firefly Aerospace aims to complete the first launch of its two-stage Alpha rocket as early as September and says testing of engines and site preparation remain on track ...

COLORADO SPRINGS—Startup Firefly Aerospace says plans remain on schedule to attempt the first launch of its two-stage Alpha rocket from Vandenburg SFB, California, on Sept. 2 following a successful ...

A firefly flashing at dusk is an iconic sign of summer. Now you can enjoy these light shows and contribute to science at the same time with a firefly tracking app. There are around 2,000 species of ...

INDIANAPOLIS - The yellow-green streaks of fireflies that bring a magical air to summer nights, inspire camp songs and often end up in jars in children's bedrooms may be flickering out in the nation's ...