A report in the upcoming Astrophysical Journal Letters reveals that analysis of data from the Hubble Space Telescope shows that a planet known as HD 189733b most likely shares Earth’s blue tone.

This illustration shows HD 189733b, a huge gas giant that orbits very close to its host star HD 189733. The planet's atmosphere is scorching with a temperature of over 1000 degrees Celsius ...

This artist's concept shows exoplanet HD 189733b orbiting its yellow-orange star, HD 189733. (NASA, ESA, G. Bacon ) Scientists have discovered what they believe is a cobalt-blue planet circling a ...

The alien planet HD 189733b is a beautiful blue dot in a sea of inky blackness, just like Earth. But that's where the similarities between the two worlds end. For starters, HD 189733b is much ...