"These ultra-low density planets are rare and they defy conventional understanding of how gas giants form, and if explaining ...

Astronomers have found an exoplanet that could serve as a benchmark in future studies. It's a rocky planet orbiting an M-type star, and though these planets are plentiful, this one could serve as a ...

Pluto was reclassified as a dwarf planet in 2006. This video explains the scientific reasoning behind its demotion, the IAU’s strict criteria for planet status, and why Pluto remains fascinating ...

For no explainable practical reason, humans are enamored with – and even empathetic toward – specific inanimate objects. Our ...