Astronomers have long speculated about an unseen planet lurking in the solar system's outer edge. This hypothetical world, ...

Though they don't orbit around our sun, sub-Neptunes are the most common type of exoplanet, or planet outside our solar ...

Have an out of this world coloring pages with our free planet coloring pages. We have a bonus space coloring pages, and free ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

Super-Earths, larger planets similar to Earth, are far more common across the universe than scientists previously believed, ...

Jon Symes is an Englishman working with the indigenous people of the Amazon In the Capital recently he tells Sonal Srivastava that sustainability is closely connected with our dreamsAs a business cons ...

ALMA observations of carbon monoxide emission from 15 protoplanetary disks reveal a stunning variety of gas structures, ...

In honor of Star Wars Day, "Revenge of the Sith" at 20, and a new season of "Andor," we're ranking the 75 best live-action "Star Wars" characters.

Astronomers claim to have discovered a new ninth planet in our solar system, according to research led by Terry Long Phan ...

The Hubble Space Telescope celebrates 35 years of groundbreaking discoveries, stunning imagery, and a lasting impact on ...

Bird symbol of good luck according to folklore Slideshows ...

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.