1895-11-08 astronomy instrument

Röntgen discovers X-rays

Wilhelm Röntgen detected penetrating radiation later fundamental to high-energy astronomy.

1899 CE Year only observatory institution

American Astronomical Society founded

Astronomers founded the American Astronomical Society at a meeting at Yerkes Observatory.

1899-10-19 rocketry history

Goddard’s spaceflight ambition takes shape

Category: Spacecraft and Technology Development › Type: Technology demonstration

Robert Goddard later associated a childhood experience in a cherry tree with his interest in spaceflight.