Astronomy
Rosetta’s Comet Sparkles with Ice, Blows Dust From Sinkholes
Comet 67P/C-G may be tiny at just 2.5 miles (4 km) across, but its diverse landscapes and the processes that shape…
What is a Terrestrial Planet?
Earth and all the other inner planets of the Solar System have something in common: they are composed of silicate…
See Pluto for Yourself Ahead of New Horizons’ Historic Encounter
Are you ready for July? The big ticket space event of the year is coming right up, as NASA’s New…
Is That a Big Crater on Pluto? Pyramidal Mountain Found on Ceres
You're probably as eager as I am for new images of Pluto and Ceres as both New Horizons and Dawn…
Who Were the First Men on the Moon?
On July 20th, 1969, history was made when men walked on the Moon for the very first time. The result…
Venus and Jupiter Meet At Last
The year's finest conjunction is upon us. Chances are you've been watching Venus and Jupiter at dusk for some time.…
What Did Galileo Invent?
Galileo is considered one of the greatest astronomers of all time. His discovery of Jupiter's major moons (Io, Europa, Ganymede…
What are the Signs of the Planets?
In our long history of staring up at the stars, human beings have assigned various qualities, names, and symbols for…
What Is The Space Age?
With the end of World War II, the Allies and the Soviet Bloc found themselves locked in a state of…
What Is a Tsunami?
For people living in oceanfront communities, the prospect of a tsunami is a frightening one. Much like earthquakes, volcanoes, hurricanes…