Elon Musk's internet satellites have been a game changer for people in rural areas, but scientists are alarmed that plans to launch thousands more will be perilous for our skies.

I would describe my past relationship with satellite radio as a “like-hate relationship.” I never loved anything about satellite radio, but I liked the ability ...

Dark matter is thought to outnumber regular matter by a factor of five to one – so why can’t we find the stuff? A new study ...