Early Earth lacked life’s essentials until a collision with Theia added them. This chance event made life possible. After the Solar System formed, it took no more than three million years for the ...

Astronomer and Pluto mission leader S. Alan Stern explores how the field has transformed during his decades-long career.

Is the future great planetary laboratory hurtling in our direction incognito, veiled in gloom and cold? That’s what ...

Over the course of more than two decades, researchers at the University of Bern have developed the so-called "Bern model," a ...

Impact history should be considered a key factor in the search for habitable Earth-like exoplanets. Southwest Research ...

The odds for life existing on other planets has just skyrocketed after a NASA rover unearthed new evidence on Mars. The odds ...

A new SETI methodology focuses on detecting the "spillover" from directed interstellar communications, mirroring how we communicate with our own spacecraft, rather than relying on broad, speculative ...

Planets smaller than Neptune but larger than Earth, with atmospheres saturated with water vapor due to extreme temperatures, ...

Most planet-forming disks have warps that can lead to planets on inclined orbits, which could explain where the tilt of Earth ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

Six planets will soon be aligning for a stunning celestial display. In early August, Mercury, Jupiter, Venus, Uranus, Neptune, and Saturn will be alignment. While most of these planets will be visible ...