Notebook

Humans

From the July 18, 1936, issue

Modeling cosmic rays, shining colored light on plants, and the chances of being struck by lightning.

Astronomy

Black Hole Explorations

What would it be like to orbit a black hole—or even to fall into one? You can find out by exploring the world of black holes in a Web site created by a team at the Space Telescope Science Institute in Baltimore, Md. For a fully interactive multimedia experience, click “Journey to a Black Hole” […]

Humans

From the July 11, 1936, issue

A new comet, stars as factories, and electricity in blood.

Astronomy

A Meteoroid Hits the Moon

This NASA Web page describes observations of a recent meteoroid impact on the moon, which created a new crater.