Water vapour discovered on potentially ‘habitable’ planet
Using Hubble Space Telescope, scientists also detected the presence of hydrogen and helium in K2-18b's atmosphere
Death by star: Scientists spot alien planet spiralling to ruin
Kepler-1658b’s orbit is getting closer to its ageing star; likely to crash in 2.5 million years
Most Earth-like planet yet spotted by NASA's Kepler
NASA scientists call it Earth cousin and not twin because it circles a star smaller and dimmer than our sun
Five Earth-like planets discovered by NASA