A team of astronomers has identified a four-planet system orbiting the red dwarf star LHS 1903 that defies conventional expectations about how planets arrange themselves around their host stars. The ...

Since the 1990s, scientists have discovered approximately 6,100 planets outside our solar system, called exoplanets.

According to these calculations, Earth's total lifespan will be about 9.5 billion years.

Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...

For 15 years, one nearby exoplanet refused to reveal its secrets, its spectrum stubbornly flat, its atmosphere unreadable.

Astronomers have reported one of the longest stellar dimming events ever recorded, with a Sun-like star fading by 97 percent for nearly 200 days. Astronomers believe one of the longest stellar dimming ...

An exoplanetary system about 116 light-years from Earth could flip the script on how planets form, according to researchers ...

Astronomers discover an unusual planetary system with a rocky planet formed outside its gaseous neighbors, challenging ...

The system, observed using the European Space Agency's Cheops space telescope, consists of four planets — two rocky and two ...