Key Characteristics Of Planet K2-18 b According to NASA, K2-18 b has a mass 8.6 times greater than Earth's, and its diameter is roughly 2.6 times that of our own planet. It circles its star within ...

The chances for alien life on an exoplanet could get a boost if the planet is cloudy, a new study suggests. See how cloudiness and spin factors into chances for life on exoplanets.

It may take less than 1,000 years for an advanced alien civilization to destroy its own planet with climate change, even if it relies solely on renewable energy, a new model suggests.

ET PHONES HOME! Best-ever sign of alien life found as scientists say they are ‘99.7% sure’ & believe planet could be ‘teeming’ with ETs They used a genius sky-scanning trick to find it ...

The star HIP 67522 with a flare erupting toward an orbiting planet, HIP 67522 b, is depicted in this illustration released by the European Space Agency on July 2, 2025. A second planet, HIP 67522 ...