Researchers with an experiment based at the South Pole have discovered the long-sought "smoking gun" for inflation. The signal was hidden in polarization patterns in the cosmic microwave background and confirms physicists' audacious theory of how the Big Bang happened.
With more than 100 billion galaxies in the observable universe, the exciting discoveries and unanswered questions are endless. Each one is unique, from ellipticals that have quenched their star formation to the vast and breathtakingly beautiful spiral galaxies imaged in so many galaxy pictures. We will update you on the latest from our neighbors, the Large and Small Magellanic Clouds, as well as the most distant stellar metropolises to form. Astronomers use instruments like the Hubble Space Telescope and the ALMA radio array in Chile to peer deep into the history of the universe, mapping star formation in young ‘uns residing in the early universe. In these news stories, you’ll find out what we’re learning about how galaxies form, evolve, and shape the beloved universe we call home.