article_snippet.sent: Last week, NASA scientists discussed in very concrete terms the steps to discovering life elsewhere in the universe over the next decade or two.
article_snippet.sent: This year is the 20th anniversary of the discovery of a planet around a star like our own sun, 51 Pegasi.
article_snippet.sent: Another planet's 100 years of brilliance might have occurred a billion years ago, or it might happen a billion years in the future.
article_snippet.sent: NASA's James Webb Space Telescope, to be launched in 2018, will look for evidence of life in the atmospheres of rocky, habitable exoplanets.
article_snippet.sent: New missions plan to look at Europa and Ganymede, moons of Jupiter that have liquid water below New missions icy surfaces.
highlights_snippet.sent: NASA scientists discuss steps to discover life elsewhere in the universe over the next two decades .
  