History
Comet Records From 1240 Accurately Date When a Byzantine Princess Died
Rome was the world's first mega-empire. At its height it stretched from Western Europe to the Middle East, and over…
Geologists Have Found the Earth’s Missing Tectonic Plate
Northern Canada has been keeping a secret from the rest of the world. It's home to "Resurrection," a tectonic plate…
A History of the Magellanic Clouds and How They Got Their Names
The Magellanic Clouds are a pair of dwarf galaxies that are bound to the Milky Way. The Milky Way is…
Remembering Don Arabian, the ‘Mad Genius’ Behind NASA’s Apollo Engineering Team
One of the truly unsung heroes of the Apollo program has passed away at age 95. Donald D. Arabian, Chief…
Martian Features Were Carved by Glaciers, not Flowing Rivers
Orbiters are giving us a chance to study the surface of Mars closely, and some of the features that pop…
Five Space and Astronomy Activities to do at Home During the Coronavirus Outbreak
We’re in uncharted territory as the world faces the Coronavirus (COVID-19) pandemic. While the medical community is on the front…
3 Billion Years Ago, the World Might Have Been a Waterworld, With No Continents At All
Evidence from an ancient section of the Earth's crust suggest that Earth was once a water-world, some three billion years…
The Life of Katherine Johnson Shows that ‘Hidden Figures’ Are Important to History
NASA mathematician Katherine Johnson did more than just calculate rocket trajectories for early space missions. Her story, when it was…
Who was Aristotle?
In the history of science, few scholars have as much of an enduring influence as classical philosopher Aristotle, whose theories…
The Apollo 1 Fire: Excerpt from “Eight Years to the Moon”
Editor’s note: Today marks the 53rd anniversary of the Apollo 1 fire that killed three astronauts during a routine test…