4.5 million years ago, two massive stars brushed past our solar system
Sandeep K S
Dec 4, 2025
1 min read
A cosmic close call occurred 4.4 million years ago when the bright stars Epsilon and Beta Canis Majoris passed near our solar system. This encounter left a mark on our local interstellar neighborhood, creating high levels of ionized hydrogen and helium. These interstellar clouds may even protect Earth from harmful radiation.
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