galaxy
Where is Earth Located?
You've probably heard the saying “everything’s relative”. When you consider our place in the Universe, everything really is relative. I’m…
“Vampire” Galaxy Sucks Star-Forming Gas from its Neighbors
What happens when a galaxy doesn't have enough hydrogen to support its stellar production process? Why, it sucks it from…
Little Big Universe: Tilt-Shifted Astro Images Make Space Look Tiny
Aww, how cute! What an adorable little... nebula? Although here it may look like it could fit in your hand,…
How Does a Star Form?
We owe our entire existence to the Sun. Well, it and the other stars that came before. As they died,…
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Navigating the Cosmos by Quasar
50 million light-years away a quasar resides in the hub of galaxy NGC 4438, an incredibly bright source of light…
Supermassive Black Holes Keep Galaxies From Getting Bigger
It's long been a mystery for astronomers: why aren't galaxies bigger? What regulates their rates of star formation and keeps…
ALMA Spots a Nascent Stellar Monster
Even though it comprises over 99% of the mass of the Solar System (with Jupiter taking up most of the…
A Galaxy Grows Fat on Nearby Gas
If you live in the U.S. you may be enjoying a sultry summer day off in honor of Independence Day,…
Our Place in the Galactic Neighborhood Just Got an Upgrade
Some cultures used to say the Earth was the center of the Universe. But in a series of "great demotions,"…
A Mega-Merger of Massive Galaxies Caught in the Act
Even though the spacecraft has exhausted its supply of liquid helium coolant necessary to observe the infrared energy of the…