Happy anniversary, white dwarf star!
Karl Jansky, the Galileo of radio astronomy, was the first to wrench astronomy away from its dependence on the optical spectrum, beyond the narrow band of electromagnetic radiation visible to the human eye.
The legacy of "Brian Tinsley's clever wife"
Could strange new physics be affecting a pair of distant space probes?
In John Updike's memorable description, "The earth is just a silly ball/To them, through which they simply pass."
Scientists face a choice: invoke a deity or continue the quest for knowledge
Neil deGrasse Tyson explains how embracing cosmic realities can enlighten our view of human life.
An Internet guide to Sputnik and other early satellites
Fifty years ago this month, the U.S.S.R. launched Sputnik 1, the world's first Earth-orbiting artificial satellite. Shocked into action, the U.S. ramped up its space program—and its science education.