So in some sense, alien worlds were not first discovered in the 1990s or even the 1980s. It took nearly a century to fully ...

"We might have finally found the cause of a mystery that's lasted over 40 years," said researcher Sandino Estrada-Dorado.

For over 40 years, astronomers have been puzzled by strange X-ray signals from the Helix Nebula’s white dwarf. Now, they may ...

A decades-old cosmic mystery may finally be solved. Scientists now suspect that the strange X-ray glow from a distant white ...

Florida Tech's Caldon Whyte is two years into a lengthy universe exploration to earn his Ph.D. in space sciences. After ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

More than 60 years after the first debunked discovery of a planet orbiting Barnard’s Star, the closest single-star system to ...

New research suggests that life could have the time and energy to arise on Earth-like worlds in the rapidly shrinking ...

The search for habitable planets has taken a leap forward with new space telescopes probing exoplanet atmospheres for life.

Scientists already know that a planet must be in the “Goldilocks zone”—not too hot and not too cold—to have liquid water, a ...