Giant Bubbles Expanding From The Milky Way Could Be Explained by a Single Event

Two sets of giant bubbles that extend thousands of light-years above and below the plane of the Milky Way could have been produced by the same event, in spite of their significant difference in size.   They’re called the Fermi bubbles and the eROSITA bubbles, and astronomers believe they were the result of activity by … Read more

Fermi Paradox: Where are the aliens?

The Fermi Paradox seeks to answer the question of where the aliens are.  Given that our solar system is quite young compared to the rest of the universe — roughly 4.5 billion years old, compared to 13.8 billion — and that interstellar travel might be fairly easy to achieve given enough time, Earth should have been … Read more