Astronomers using NASA's Transiting Exoplanet Survey Satellite found that the star ancient Egyptians once used as their North Star is part of a binary pair of stars that eclipse one another.
Ancient North Star Thuban Eclipses Its Stellar Companion (Video) : Read more
"Using NASA's
Transiting Exoplanet Survey Satellite (TESS), astronomers found that Thuban and its fainter companion star eclipse, or pass in front of each other from Earth's perspective, every 51.4 days at an average distance of about 38 million miles apart, NASA officials said in a statement."
My observation - this is excellent! Binary stars, spectroscopic and visual like Sirius A and B, are important in astronomy. They show that gravity and Einstein GR is accurate, as well as Special Relativity. The distance separation is about 0.4088 AU or a bit farther apart than the distance between Mercury and the Sun.
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