- A New World’s Extraordinary Orbit Points to Planet Nine - Astronomers argue that there’s an undiscovered giant planet far beyond the orbit of Neptune. A newly discovered rocky body has added evidence to the circumstantial case for it. https://www.quantamagazine.org/a-new-worlds-extraordinary-orbit-points-to-planet-nine-20180515/ 13 comments worldnews
- A New World’s Extraordinary Orbit Points to Planet Nine - Astronomers argue that there’s an undiscovered giant planet far beyond the orbit of Neptune. A newly discovered rocky body has added evidence to the circumstantial case for it. https://www.quantamagazine.org/a-new-worlds-extraordinary-orbit-points-to-planet-nine-20180515/ 33 comments space
- Hot Jupiters were the first class of exoplanet that astronomers discovered. Nearly 25 years later, scientists still debate how these gas giant worlds end up closer to their stars than Mercury is to our Sun. But some think that finding the answer could help unlock broader secrets of planet formation. https://www.knowablemagazine.org/article/physical-world/2019/hot-jupiter-formation-theories 6 comments space