alien    alien life    andrew vanderburg    another earth    atmosphere    dwarf    earth    earth-like    exoplanet    first    habitable zone    joey rodriguez    m dwarf    microbial life    nasa    nasa planet hunter finds its 1st earth-size habitable-zone world    oumuamua    rocky    science    space    spitzer space telescope    star    sun    terrestrial    tess    tess mission's first earth-size world in star's habitable-zone    toi 700 d    toi 700d tess's first earth-sized habitable-zone planet    toi-700    transit    transiting