The exoplanet HD 20794d swoops in and out of its habitable zone every few hundred days, making for an extreme climate.

Astronomers have discovered an exoplanet that might have favorable conditions for liquid water. This planet, HD 20794 d, ...

The discovery of a potentially habitable 'super-Earth' exoplanet, HD 20794 d, was published in the scientific journal ...

NASA astronauts Suni Williams and Butch Wilmore are scheduled to begin U.S. Spacewalk 92 early Jan. 30. Suni Williams and ...

NASA scientists have discovered organic content in the samples recovered from the asteroid Bennu, which points back to the ...

Astronomers have discovered another exoplanet that may have favourable conditions for the existence of liquid water. We are ...