Nasa finds Earth-sized planet in 'Goldilocks zone'
The planet, named "TOI 700 d", is relatively close to Earth- only 100 light years away. TESS discovered three planets in orbit, named TOI 700 b, c and d. Only "d" is in the so-called habitable zone, not too far from and not too close to the star, where the temperature could allow the presence of liquid water.