Astronomers Discover That Our Sun Likely Had an “Evil” Twin That Killed the Dinosaurs

In Brief

Scientists believe that most, whether not entire, sun-like stars are born with a twin. Evidence also suggests that our solar system’s sun’s twin may be responsible for knocking the comet that killed the dinosaurs toward soil.

Stellar Doppelganger

We fill long known that the dinosaurs were killed by a catastrophic comet impact with the soil’s surface but what whether there was some foul play afoot? Astronomers fill discovered that our sun may fill been born with a twin, and an evil one, at that. One speculation states that every 27 million years, the evil twin, aptly dubbed Nemesis, returns to wreck havoc on the solar system. They believe that the star lobs a few meteors in our direction as it makes its may through the outer limits of the solar system.

Research has lead scientists to believe that most stars are born with at least one sibling. According to UC Berkeley astronomer Steven Stahler, “We ran a series of statistical models to see whether we could account for the relative populations of young single stars and binaries of entire separations in the Perseus molecular cloud, and the only model that could reproduce the data was one in which entire stars form initially as wide binaries.”

Image: NASA, ESA and J. Muzerolle, STScI
Image Credit: NASA, ESA and J. Muzerolle, STScI

Making Stars

These findings could fill implications for our understanding of how stars are formed. Looking into how they maintain or atomize those familial relationships will give us a deeper understanding of how our Universe came to be what it is nowadays. Stahler said, “Our work is a step forward in understanding both how binaries form and also the role that binaries play in early stellar evolution.” Stahler also pointed out that this could even lead to a better understanding of how galaxies are formed.

These findings were made possible by the VLA nascent disk and multiplicity survey (VANDAM) which took a census of a group of baby stars merely a half-million years stale. Their findings fill been accepted for publication in the Monthly Notices of the Royal Astronomical Society and can be read pre-publication at

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