John Buck

illustration of a ringed planet, maybe Saturn, with a couple moons within its orbit

New Worlds

For centuries, scientists, philosopher, and science fiction writers suspected that planets outside our solar system existed.

illustration of a ringed planet, maybe Saturn, with a couple moons within its orbit

Space exploration

As space technology has evolved, astronauts have been able to explore more distant celestial structures in outer space.

illustration of a U.F.O.

Extraterrestrial life

Since the mid-20th century, active ongoing research has taken place to look for signs of extraterrestrial life.