galaxies

It Turns out There Were Supernovae Exploding all Over, we Just Couldn’t see Them

When the poet Horace said “We are but dust and shadow”, he probably didn’t think that dust itself could create…

2 months ago

The Largest Rotating Objects in the Universe: Galactic Filaments Hundreds of Millions of Light-Years Long

We've known for a while about the large-scale structure of the Universe. Galaxies reside in filaments hundreds of millions of…

3 months ago

Astronomers Can Predict When a Galaxy’s Star Formation Ends Based on the Shape and Size of its Disk

A galaxy's main business is star formation. And when they're young, like youth everywhere, they keep themselves busy with it.…

8 months ago

Galaxy Mergers can Boost Star Formation, and it can Also Shut it Down

Galaxy mergers are beautiful sights, but ultimately deadly. In the midst of the collision, the combined galaxy will shine brighter…

8 months ago

An Active Galaxy That Erupts Predictably Every 114 Days Or So

Computers are known for their ability to spot patterns.  It’s what they are good at, and over the last 50+…

8 months ago

The Universe in Formation. Hubble Sees 6 Examples of Merging Galaxies

Audio narration by the author is available above 10 billion years ago, galaxies of the Universe were ablaze with the…

8 months ago

This is the Fireworks Galaxy. It’s had ten Supernovae in the Last Century Alone

Say hello to NGC 6946, otherwise known as the Fireworks Galaxy. This little galaxy is the most prolific producer of…

9 months ago

Astronomers find a galaxy that had its dark matter siphoned away

The galaxy NGC 1052-DF4 surprised scientists by having almost no dark matter to complement its stellar population. Recently a team…

10 months ago

The family tree of the Milky Way. The mergers that gave us the galaxy we see today

Galaxies build themselves up slowly over time by cannibalizing their neighbors. Using an advanced suite of computer simulations, researchers have…

10 months ago

New Horizons Saw the Universe With Even Less Light Pollution than Hubble’s View

A new study based on New Horizons data has conducted the most accurate measurements of the Universe's background light to…

11 months ago