Exoplanets dance around distant star in stunning 12-year timelapse (video)

Is methane a reliable biosignature on exoplanets? This scientist explores ways Earth-like planets could have methane in their atmosphere that have nothing with living things so we don't "get fooled by trickster exoplanets."

Watch This 12-Year Timelapse of Exoplanets Orbiting Their Star

Faraway blue star cluster shines in Hubble Space Telescope photo