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Topic: habitable worlds

Digitally created space scene with the orbital view on the Earth-like planet and it's moons (Getty Images/Lev Savitskiy)

Two new Earth-like planets discovered

This is an artist's concept of a plume of water vapor thought to be ejected off the frigid, icy surface of the Jovian moon Europa, located about 500 million miles (800 million kilometers) from the sun. Spectroscopic measurements from NASA's Hubble Space Telescope led scientists to calculate that the plume rises to an altitude of 125 miles (201 kilometers) and then it probably rains frost back onto the moon's surface. Previous findings already pointed to a subsurface ocean under Europa's icy crust. (NASA/ESA/K. Retherford/SWRI)

Jupiter's moon Europa teems with water

An artist's conception of what the surface of the exoplanet TRAPPIST-1f may look like, based on available data about its diameter, mass and distance from the host star. (NASA/AP)

These two planets may look like Earth 2

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