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Cosmology

Chipping Away at the Great Attractor Mystery. Another Galaxy Cluster Found Behind the Milky Way’s Disk

Something huge lurks in the shadows of the Universe. Known as the Great Attractor, it is causing the...

Can JWST see Galaxies Made of Primordial Stars?

All stars are composed of mostly hydrogen and helium, but most stars also have measurable amounts of heavier elements,...

The ‘Brightest of All Time’ Gamma-Ray Burst Sparks a Supernova Hunt

On the morning of October 9, astronomers’ inboxes pinged with a relatively modest alert: NASA’s Swift Observatory had just...

Astronomers Chart the Influence of Dark Matter and Dark Energy on the Universe by Measuring Over 1,500 Supernovae

In 2011, the Nobel Prize in physics was awarded to Perlmutter, Schmidt, and Reiss for their discovery that the...

Astronomers see Tantalizing Evidence for one of the First Stars to Form in the Universe

According to the predominant cosmological model, the first stars in the Universe formed roughly 100,000 years after the Big...

A Galaxy With Ten Times the Mass of the Milky Way is Preparing to Become a Quasar

One of the fundamental questions in astronomy is how galaxies formed over 13 billion years ago and have evolved...

How the Physics of Nothing Underlies Everything

Millennia ago, Aristotle asserted that nature abhors a vacuum, reasoning that objects would fly through truly empty space at...

A New Study Confirms That Gravity has Remained Constant for the Entire age of the Universe

For over a century, astronomers have known that the Universe has been expanding since the Big Bang. For...

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