A 24-year-old observatory assistant from the Midwest discovered Pluto. Clyde Tombaugh, born in 1906 in Streator, Illinois, ...

Found in the northern sky, GJ 3378b is a potentially rocky world with liquid water on its surface, receiving 90% of the ...

The discovery of the Kuiper Belt revealed thousands of icy objects near Pluto, challenging its status as a planet. After the ...

Over the past three decades, computer models of planetary system formation have gone from fairly crude representations to ...

The Nancy Grace Roman Space Telescope is expected to discover as many as 200,000 new planets and reveal details about the ...

Add Yahoo as a preferred source to see more of our stories on Google. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, ...

Hubble Space Telescope observations of white dwarf star G238-44 has shown that it is "consuming both rocky-metallic and icy ...