galaxies
According to Simulations, the Milky Way is One in a Million
Humanity is in a back-and-forth relationship with nature. First, we thought we were at the center of everything, with the…
The Donut That Used To Be a Star
The death of a star is one of the most dramatic natural events in the Universe. Some stars die in…
You’re Looking at a Map of the Milky Way’s Magnetic Field
Using telescopes that study the sky in the microwave part of the electromagnetic spectrum, astronomers have successfully mapped the structure…
Using the Shadows of Clusters to Measure the Universe
Astronomers have begun using a sophisticated suite of simulations, an advanced machine learning model of the formation of galaxy clusters,…
Astronomers Begin to Understand Strange “Backsplash” Galaxies
Clusters of galaxies do not appear in an instant. Instead they gradually form through the accumulation of many galaxies. But…
The James Webb Links Modern Green Pea Galaxies to Ancient Galaxies in the Cosmic Dawn
When the James Webb Space Telescope lifted off from Earth on Christmas Day in 2021, it carried a lot of…
Newly Found Stars are Technically in the Milky Way, but They’re Halfway to Andromeda
We all know our galaxy, the Milky Way, is big. Really big. But, exactly how far out does it extend?…
Webb’s New Image Reveals a Galaxy Awash in Star Formation
When a spiral galaxy presents itself just right, observations reveal more detail. That's the case with NGC 7469, a spiral…
Webb Stares Deeply Into the Universe, Showing How Galaxies Assemble
The James Webb Space Telescope is delivering a deluge of images and data to eager scientists and other hungry-minded people.…
Webb Completes its First “Deep Field” With Nine Days of Observing Time. What did it Find?
About 13 billion years ago, the stars in the Universe's earliest galaxies sent photons out into space. Some of those…