Comets are icy bodies that formed alongside the planets in the early Solar System before being flung into its distant outer ...

What Is a Light-Year? A light-year is the distance light travels in one year. Light moves incredibly fast — about 186,000 miles (300,000 kilometers) per second, covering 5.88 trillion miles (9.46 ...

Students, professors, alumni and stargazers alike gathered to celebrate the life and legacy of Carl Sagan in a 90th birthday celebration hosted by the Carl Sagan Institute.