Shannon Hall
A Snapshot of a Galactic Crash
Some galaxies shine with a red ghostly glow. Once these galaxies stop forming new stars, they can only host long-lived…
Hubble Spots the Ghostly Light From Dead Galaxies
In a patch of sky 3.5 billion light-years away there are hazy elliptical galaxies, colorful spirals, blue arcs and distorted…
Distant Galaxies Reveal 3D Cosmic Web for the First Time
On the largest scales, networks of gaseous filaments span hundreds of millions of light-years, connecting massive galaxy clusters. But this…
MAVEN Spacecraft’s First Look at Mars Hints at Promising Results
It’s been less than a month since NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft slipped into orbit. But it’s…
Retired Astronaut Chris Hadfield Releases Stunning Space Photos
Orbiting 200 miles above the Earth, Retired Astronaut Chris Hadfield could easily photograph the ridges of the Himalayan Mountains, the…
A New Look at Dark Matter — Is the Milky Way Less of a Behemoth Than Previously Thought?
Astronomy is notorious for raising more questions than it answers. Take the observation that the vast majority of matter is…
Time Dilation Confirmed in the Lab
It sounds like science fiction, but the time you experience between two events depends directly on the path you take…
Have Astronomers Seen a Forming Planet in Action?
Huge disks of dust and gas encircle many young stars. Some contain circular gaps — likely the result of forming planets…
219 Million Stars Create the Most Detailed Catalogue of our Milky Way Yet
On the darkest of nights, thousands of stars are sprinkled across the celestial sphere above us. Or, to be exact,…
This Exoplanet Has Prematurely Aged its Star
Hot young stars are wildly active, emitting huge eruptions of charged particles form their surfaces. But as they age they…