Caltech News tagged with "astronomy + exoplanets + JPL + planetary_science"NASA's Cassini spacecraft is back in contact with Earth after its successful first-ever dive through the narrow gap between the planet Saturn and its rings on April 26, 2017. #Astronomy #back #Caltech #Cassini #contact #exoplanets #News #planetary_scienceNASA's #spacecraft #tagged
Systems with “Hot Jupiter” planets are unlikely to have earth-like planets. Mostly because when the hot jupiter makes its way closer to the star it can shoot other planets out of the solar system with its huge gravitational pull.
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Found in Space: 8 Exoplanets that Could Host Alien Life | Gadgets, Science & Technology
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The atmosphere of the Neptune-mass exoplanet HAT-P-26b is unexpectedly primitive, composed primarily of hydrogen and helium. By combining observations from Hubble and Spitzer space telescopes, Wakeford et al determined that, unlike Neptune and Uranus, the exoplanet has relatively low metallicity. Image credit: NASA’s Goddard Space Flight Center.
“We determined the weather on these alien worlds (Kepler-5b, -6b, -7b, -8b, -10b, -12b, -41b, -43b, -76b, -91b, -412b, TrES-2b, HAT-P-7b and KOI-13b) by measuring changes as the planets circle their host stars, and identifying the day-night cycle. We traced each of them going through a cycle of phases in which different portions of the planet are illuminated by its star,” said Lisa Esteves. An artist’s conception of the gas giant exoplanet TrES-2b. Image credit: David A. Aguilar / CfA.