"Are we alone?" This ancient question has occupied humanity's mind for a long time. In 1995, the discovery of the first exoplanet orbiting a sun-like star opened the door to exploring this profound ...

The Earth supports the only known life in the universe, all of it depending heavily on the presence of liquid water to facilitate chemical reactions. While single-celled life has existed almost as ...

NASA is Searching for Earth 2.0, Here's How.

Spotting Earth-like planets is nearly impossible with conventional telescopes, but researchers propose a bold fix: a rectangular design that can separate a planet’s faint glow from its blinding star.

In a landmark achievement, the James Webb Space Telescope has discovered its first exoplanet. About the same mass as Saturn, it was found in a star system about 111 light-years distant. It’s also the ...

The curious minds at What If explore what would happen if we discovered Earth 2.0.

To resolve an Earth-size planet at 10 microns at a distance of about 30 light-years would require a telescope aperture approaching 20 meters (65.6 feet). But such a telescope would be prohibitively ...