Earth 2.0? Not just size, this planet has same gravity as us, Hubble is looking at it
Nasa's Hubble Space Telescope has precisely measured the size of an Earth-sized exoplanet as it moved across its host star. Hubble's observations confirmed a full transit, revealing that LTT 1445Ac is just 1.07 times the diameter of Earth, classifying it as a rocky terrestrial planet with similar surface gravity to our own world. This discovery is not just a testament to the capabilities of the Hubble Space Telescope but also sets the stage for future studies with the James Webb Space Telescope, which could analyze the planet's atmosphere through spectroscopy. Pass expressed excitement for what lies ahead: "Transiting planets are exciting since we can characterize their atmospheres with spectroscopy, not only with Hubble but also with the James Webb Space Telescope.
NASA's TESS planet-hunter discovers first Earth-sized exoplanet 53 light-years away
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