Planet Labs operates a constellation of satellites that take images of planet Earth multiple times a day. It provides this ...

The fact that Planet stock went up so much in four months means I was right about Option 1. The fact that Planet stock is ...

The three-planet parade is expected to be visible through June 15, giving skywatchers multiple chances to catch the event if ...

Astronomers have spent years searching for a possible hidden giant planet far beyond Neptune. Unusual orbits among distant ...

Mercury is due to join Venus and Jupiter in the night sky for an uncommon celestial event commonly known as a planet parade.

A distant exoplanet orbiting a small red dwarf star has emerged as one of the most inflated worlds ever measured around its ...

The world of arbuscular mycorrhizal fungi (AM fungi) runs deep. They live symbiotically with around 70 percent of Earth’s ...

The hunt for Planet Nine continues as new discoveries make the Solar System’s biggest mystery even harder to solve. Is there ...

WASP-121 b is split between extremes. One side faces its star nonstop and burns at about 2,770 Kelvin. The other stays in ...

Planet Fitness is encouraging teens to stay active this summer by once again offering free gym memberships through its annual ...

Four-and-a-half billion years ago, a massive world—possibly as big as the moon or even Mars—orbited our sun before crashing ...

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...