These Two Stars Might Merge in an Explosion Visible From Earth This Century

By the end of the 21st century, stargazers may witness a “new star” seem to appear in the constellation Sagitta the Arrow. Located roughly 7,800 light-years away, the two stars, collectively called V Sagittae, are spiraling closer and closer together. And as they twirl around each other, the larger star is dumping material onto its smaller, white dwarf companion. Ultimately, the two will collide and coalesce, creating a powerful burst of light that astronomers estimate will make V Sagittae the brightest star in the night sky for about a month.