With an estimated 200 billion trillion stars in the observable universe, the existence of other technological species is highly likely, potentially even within our Milky Way galaxy.
NASA’s OSIRIS-REx mission uncovered a cosmic connection between asteroid Bennu and Earth’s Searles Lake. Both contain minerals formed by evaporating salty water, hinting that Bennu’s parent body once ...
NASA and European scientists explain how they calculate the probability of the space rock 2024 YR4 impacting our planet, and why it’s not yet time to worry.