Two strange drops of X-ray energy rotating from the center of the galaxy


Millions of years ago, a powerful explosion rocked the center Galaxy, Sending two blistering waves across the sky. Those waves bulldozed through the galaxy, heating all the gas and dust in their path and leaving two teltale blobs of hot, highly energetic gamma-rays in their wake.

Today, those drops – now named Fermi Bubbles – Half of the width of our galaxy. There is a lobe tower for 25,000 light-years atop the Milky Way’s disk, and another is larger below it. Since their discovery in 2010, bubbles have been an unbroken mystery of our galaxy – and we now know that they are not alone.

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