Despite this object lesson right on our interplanetary doorstep, the “Earth-like” term endures. Even if we expand what we mean by the phrase—which admittedly has no consensus definition, though ...

For generations, artists and science-fiction writers have imagined alien landscapes beneath twin sunsets. The image became iconic in popular culture long before astronomers confirmed that planets ...

Dust made up of similar stuff as the Earth has been found in and around a handful of dead stars. The dust, which was left behind when the stars chewed up errant asteroids, suggests terrestrial planets ...

NASA scientists are exploring a billion‑dollar 'starshade' to create artificial eclipses in space and expose faint Earth‑like ...