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  • Exoplanets, worlds beyond the Solar System - The Planetary Society
    Highlights Scientists have discovered more than 5,000 planets outside of the Solar System, or “exoplanets” Most stars in our galaxy have at least one exoplanet, and many are unlike any of the worlds in the Solar System Some exoplanets could be habitable and are prime targets in the search for life beyond Earth
  • How to Search for Exoplanets - The Planetary Society
    How to Search for Exoplanets Even through a powerful ground- or space-based telescope, stars look like tiny points of light Planets are even tinier and are very difficult to spot next to their bright host stars Therefore, scientists rely on indirect methods, like looking at the stars themselves for signs that planets might be orbiting them
  • What are the most Earth-like worlds we’ve… | The Planetary Society
    The most Earth-like exoplanets These three planets beyond our Solar System have some important characteristics in common with Earth, like orbiting in the habitable zone of their star By searching for Earth-like exoplanets, researchers hope to illuminate how ordinary and extraordinary our planet and its liquid water may be
  • Color-Shifting Stars: The Radial-Velocity Method
    The radial-velocity method for detecting exoplanets relies on the fact that a star does not remain completely stationary when it is orbited by a planet The star moves, ever so slightly, in a small circle or ellipse, responding to the gravitational tug of its smaller companion When viewed from a distance, these slight movements affect the star's normal light spectrum, or color signature The
  • Roman Space Telescope, investigating dark… | The Planetary Society
    The Roman Space Telescope is the next step in our hunt for Earth-sized exoplanets and our understanding of mysterious dark energy
  • The Exoplanet Issue | The Planetary Society
    The Planetary Report® The Exoplanet Issue June Solstice 2024 On the Cover: Seven known planets orbit the red dwarf star TRAPPIST-1 Because several of those planets lie in the star’s habitable zone, they are among the most intriguing exoplanets in the search for life beyond our Solar System
  • The Different Kinds of Exoplanets You Meet in the Milky Way
    At a glance: Exoplanets are planets that orbit other stars Some look like planets in our own solar system, while others are dramatically different Exoplanets seem to follow the same general rules as the planets in our solar system: Small planets are rocky, big planets are gassy, and the ones in between may be watery There are other rocky worlds orbiting stars at the right distance to allow
  • Other Earths - The Planetary Society
    The only problem is finding them To date, we have found more than 7,000 planets orbiting other stars (known as exoplanets), but our efforts have focused on relatively easy-to-discover worlds That includes large gaseous planets like Jupiter or rocky worlds orbiting small and dim stars known as red dwarfs
  • How astronomers search for life on exoplanets - The Planetary Society
    New technologies for seeing exoplanets Direct exoplanet imaging, which involves blocking the light from a bright star and resolving the light from a nearby, fainter planet, is an excellent avenue for both reflection spectroscopy and thermal emission spectroscopy
  • Are planets with two stars promising places… | The Planetary Society
    The possibility of moons of binary star exoplanets harboring life ties back to our Solar System Some of the biggest planetary science missions launching this decade, like JUICE and Europa Clipper, are dedicated to finding if the underground oceans of Jupiter’s icy moons are habitable





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