Almost Three Times as Old as Earth–Oldest Planet in Our Milky Way Galaxy
“In 2003 we derived the properties of a planet that was orbiting a white dwarf star and a neutron star binary near the core of the ancient globular star cluster M4, located 5,600 light-years away in the summer constellation Scorpius using NASA’s Hubble Space Telescope, precisely measuring the mass of the oldest known planet … Continue reading Almost Three Times as Old as Earth–Oldest Planet in Our Milky Way Galaxy
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