Month: December 2015

casimir sphere

A Force from Empty Space: The Casimir Effect

This image denotes a ball that is moving even though there are no visible forces acting upon it in a vacuum (and if the image seems weird it’s because the ball is only around 1/10th of a millimetre). This small...

/ December 7, 2015
Cygnus: Bubble and Crescent

Cygnus: Bubble and Crescent

The clouds of gas and dust that you see are remnants of an exploded star.  The gas and dust spreads out into the Universe and awaits an opportunity to once again clump together and reform into a new star, planet...

/ December 5, 2015
Enceladus Rings

Enceladus: Ringside Water World

Saturn’s icy moon Enceladus poses above the gas giant’s icy rings in this Cassini spacecraft image. The dramatic scene was captured on July 29, while Cassini cruised just below the ring plane, its cameras looking back in a nearly sunward...

/ December 4, 2015
Nebulae in Auriga

Nebulae in Aurigae

Rich in star clusters and nebulae, the ancient constellation of the Charioteer (Auriga) rides high in northern winter night skies. Composed from narrow and broadband filter data and spanning nearly 8 Full Moons (4 degrees) on the sky, this deep...

/ December 2, 2015

In the Center of Spiral Galaxy NGC 3521

This huge swirling mass of stars, gas, and dust occurs near the center of a nearby spiral galaxy. Gorgeous spiral NGC 3521 is a mere 35 million light-years distant, toward the constellation Leo. Spanning some 50,000 light-years, its central region...

/ December 1, 2015