A pair of sibling gas giants originally spotted by citizen scientists are so lightweight that their density resembles wispy ...

At The Nature Conservancy (TNC), community and collaboration is at the heart of our efforts to protect the planet. With nearly 6,000 people working in every US state and 80 more countries to address ...

A pair of giant planets circling a star more than 1,100 light-years from Earth looks almost too bloated to be real. Each ...

A groundbreaking super-puff planet discovery has revealed two giant exoplanets with densities below cotton candy, changing how scientists understand alien worlds. These Jupiter-sized planets show that ...

Forbes contributors publish independent expert analyses and insights. Leslie Katz covers the intersection of culture, science and tech. A yellowish-orange glow bathes Phainoterra, a planet of dramatic ...

Astronomers have found evidence of a process that supports an alternative, more rapid approach to planetary formation, more top down than bottom up. By Katrina Miller When it comes to making a planet, ...

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4 Most Terrifying Planets in The Universe ...

The Solar System is far more diverse in size than it appears from Earth. From tiny rocky worlds to massive gas giants, each ...

Mike Brown is convinced that beyond Neptune, at the far reaches of our solar system, there's an unseen giant planet. "This is the 5th largest planet in our solar system, lurking out there, waiting to ...

Six planets will align before dawn on June 3 in a planetary parade, but only two will be visible to the naked eye. Mercury, Jupiter, Uranus and Neptune will likely be obscured by the rising sun or ...

I’m a planetary scientist who was born the year of Sputnik’s launch. Over the course of my 40-year career, I’ve witnessed not one but at least five separate revolutions that fundamentally transformed ...