binary stars
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Does Our Sun Have a Long-Lost Twin?
The strange configuration of material in the outer reaches of our solar system has led a team of scientists to speculate that the Sun had a companion during its early days. Intriguingly, this scenario could explain the presence of the hypothesised Planet Nine, should it actually exist.
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These Star-Crossed Stellar Lovers Are Heading For A Disaster Of Cosmic Proportions
Behold VFTS 352, the hottest and most massive “overcontact binary” star system ever discovered. The two stars, which are so close that they’re touching, feature a combined mass 57 times that of our Sun. Astronomers say it’s a unique stellar relationship that will culminate in a rather dramatic finish.