In a conventional system like our own, rocky planets such as Mercury, Venus, Earth, and Mars orbit closest to the host star. Farther out, gas giants ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

Feb. 17's annular solar eclipse occurred as the lunar disk slipped between the sun and Earth during its new moon phase. The ...

Today (Feb. 17), an annular solar eclipse will commence its journey across a remote region of Antarctica where it will be visible to more penguins than people. The partial solar eclipse portion of the ...

Close-up measurements from NASA’s Parker Solar Probe are giving scientists an unprecedented look at how the solar wind gains ...

An inside-out planetary system around the star LHS 1903 is turning everything that astronomers know about planet formation upside down.

Astronomers have observed a planetary system that challenges current planet formation theories, with a rocky planet that ...

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how planets form.

Astronomers have uncovered a distant planetary system that flips a long-standing rule of planet formation on its head. Around the small red dwarf star LHS 1903, scientists expected to find rocky ...

Since the 1990s, astronomers have found a handful of other dwarf planets in the belt, such as Eris and Sedna, along with ...

It’s 11 o’clock on a clear, moonless night when, although ready to call it a night, I pause at a glass door that looks out to the southwestern sky: I am moved by an urge for contact with the stars.

A closer look at the planets around a star called LHS 1903 may just flip our understanding of how planetary systems form.