Astronomers using the Space Telescope have conducted the first spectroscopic survey of Earth-sized planets in the -1 system’s zone. Hubble reveals that at least the inner five planets do not seem to contain puffy, hydrogen-rich similar to gaseous planets such as Neptune. This means the may be more shallow and rich in heavier gases like carbon dioxide, methane, and oxygen.

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Read the joint Hubble and Spitzer findings on

The Nature Astronomy science paper is available at

Credit: NASA’s Goddard Space Flight Center/Katrina Jackson

Music credit: “Deep Groove” by Danny McCarthy [ASCAP] and Thomas Dill [ASCAP]; Soundcast Music SESAC; Chronic Trax; Killer Tracks Production Music

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