Exoplanet HD 209458b transits its star. The illuminated crescent and its colours have been exaggerated to illustrate the light spectra that the astronomers used to identify the six molecules in ...

HD 209458 b is a gas giant larger than Jupiter spinning 158 light-years away from Earth. The exoplanet has a 3.5-day orbital period, presses close to its star and runs hot—and all these factors ...

HD 209458 b, nicknamed "Osiris," is one of the first exoplanets seen passing in front of its star, and it's about 159 light-years from Earth. Kepler-186f is the first Earth-sized planet discovered in ...

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Exoplanets are another thing though. Some of them are so alien to us; it's hard to picture exactly what the planet would look like if we were able to visit it. HD 209458b is one of those worlds.

However, the size of the exoatmosphere of other hot Jupiter planets like HD 209458 b (the first transiting planet ever discovered) can be 10 times larger than the already inflated atmosphere.

Exoplanet HD 189733 b contains hydrogen sulfide, according to new research. Scientists made an exciting -- and pungent -- announcement about a nearby exoplanet this week, finding that a planetary ...

For that reason, it’s one of the most well-studied exoplanets. “HD 189733 b is not only a gas giant planet, but also a ‘giant’ in the field of exoplanets because it is one of the first ...

Hycean planets, like K2-18 b, are water worlds with atmospheres ... Sun-like star is visible through amateur telescopes, dubbed HD 209458. That star has an exoplanet, a gas giant, and here's ...