Dark Matter
Where Have All the Pulsars Gone? The Mystery at the Center of Our Galaxy
The galactic center is a happening place, with lots of gas, dust, stars, and surprising binary stars orbiting a supermassive black…
First Glimpse of a Young Galactic Core Forming in the Early Universe
Astronomers have spotted, for the first time, a dense galactic core blazing with the light of millions of newborn stars…
Mapping Dark Matter 4.5 Billion Light-years Away
The Milky Way measures 100 to 120 thousand light-years across, a distance that defies imagination. But clusters of galaxies, which…
Dwarf Galaxies That Dance? Andromeda Observations Reveal A Larger Cosmic Mystery
What is up with these dwarf galaxies? A survey of thousands of galaxies using the Sloan Digital Sky Survey reveals…
Missing Light Crisis: The Universe Seems a Little Too Dark
There are few moments more breathtaking than standing beneath a brilliant starry sky. Thousands of small specks of light mark…
Intriguing X-Ray Signal Might be Dark Matter Candidate
Could a strange X-ray signal coming from the Perseus galaxy cluster be a hint of the elusive dark matter in…
Unprecedented Images of the Intergalactic Medium
An international team of astronomers has taken unprecedented images of intergalactic space — the diffuse and often invisible gas that…
How Giant Galaxies Bind The Milky Way’s Neighborhood With Gravity
Is it stretching it too far to think of a Lord of the Rings-esque "Entmoot" when reading the phrase "Council…
‘Cosmic Flashlight’ Makes Gas Glow Like A Fluorescent Light Bulb
Funny how a single quasar can illuminate -- literally and figuratively -- some of the mysteries of the universe. From…
New Online Classes to Help You Learn More about the Universe
Roughly eighty percent of all the mass in the Universe is made of dark matter – a mysterious invisible substance…