Extrasolar planet and parent star
NASA, ESA, and G. Bacon (STScI)
This artist's illustration shows the extrasolar planet HD 189733b with its parent star peeking above its top edge. Astronomers used the Hubble Space Telescope to detect methane and water vapor — the raw ingredients for life — in the Jupiter-sized planet's atmosphere.
The planet is so massive and so hot, however, it is considered an unlikely host for life. Astronomers discovered this by studying how light from the host star filters through the planet’s atmosphere.