Scientists using the Hubble Space Telescope have measured the size of a small exoplanet just 22 light years away, confirming that it's the closest known Earth-sized world to our solar system to date.
Its characteristics diverge further from our own world from there. Case in point, its surface temperature is a blazing hot 500 degrees Fahrenheit, ruling out any real hope of potential life or habitability.
When LTT 1445Ac was first discovered, the researchers used NASA's Transiting Exoplanet Survey Satellite (TESS) to observe it. The space telescope did its job by making the find, but it wasn't powerful enough to provide conclusive data.
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