Zeta Oph: Runaway Star
Like a ship plowing through cosmic seas, runaway star Zeta Ophiuchi produces the arcing interstellar bow wave or […]
Astronomy
Aurora Australis
Not fireworks, these intense shimmering lights still danced across Earth’s night skies late last month, seen here above […]
Venus and Jupiter are Far
On June 30 Venus and Jupiter were actually far apart, but both appeared close in western skies at […]
Venus and Jupiter are Close
On June 30, Venus and Jupiter were close in western skies at dusk. Near the culmination of this […]
Venus, Jupiter, and Noctilucent Clouds
Have you seen the passing planets yet? Today the planets Jupiter and Venus pass within half a degree […]
An Unusual Mountain on Asteroid Ceres
What created this large mountain on asteroid Ceres? No one is yet sure. As if in anticipation of […]
All the Colors of the Sun
It is still not known why the Sun’s light is missing some colors. Here are all the visible […]
Stars of a Summer Triangle
Rising at the start of a northern summer’s night, these three bright stars form the familiar asterism known […]
Planet Aurora
What bizarre alien planet is this ? It’s planet Earth of course, seen through the shimmering glow of […]
Star Trails Above Table Mountain
Stars trail above and urban lights sprawl below in this moonlit nightscape from Cape Town, South Africa, planet […]