It is the largest object in the Solar System, but recent studies suggest it was once even twice as large as it is today.

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study's School of Natural ...

The team's calculations indicate that young Jupiter had a radius nearly twice its current size, with a volume large enough to ...

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Phillies fifth. Nick Castellanos singles to shallow infield. Max Kepler singles to shallow right field. Nick Castellanos to third. Alec Bohm flies out to center field to Oneil Cruz. Brandon Marsh hits ...

Runners left in scoring position_Pittsburgh 0; Philadelphia 7 (Turner 2, Kepler 3, Schwarber, Marsh). RISP_Pittsburgh 0 for 0; Philadelphia 3 for 12. Runners moved up_Stott. GIDP_Bart. DP_Philadelphia ...

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 ...

Researchers using the Hubble Space Telescope have discovered water vapor in the atmosphere of planet K2-18b, located about ...

Exoplanets—planets that orbit stars beyond our solar system—have transformed our understanding of the universe. Since the ...