of 1250 km, making it the largest object discovered in the solar system since the discovery of Pluto in 1930.

Two far-off planets are likely made of water, according to research conducted using NASA's Hubble and Spitzer telescopes.The so-called "water worlds" are orbiting a red dwarf star, the smallest and ...

Astronomers have discovered a rare in-sync solar system with six planets moving like a grand cosmic orchestra, untouched by outside forces since their birth billions of years ago. The find, announced ...

An exact line-up would mean that each of our seven neighbouring planets eclipses those behind it, which, given their small angular sizes as seen from Earth, is incredibly unlikely. Realistically, you ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in ...

Lucas Brefka receives funding from a NASA Exoplanet Research Program grant. Christopher Palma does not work for, consult, own shares in or receive funding from any company or organization that would ...