A new candidate exoplanet appears to almost uncanny similarities to Earth — but may differ in at least one major way.

Updated measurements from NASA’s Juno spacecraft could help researchers better understand the planet's mysterious interior, ...

Aging stars can completely destroy their planets. When a star reaches the end of its life on the main sequence, it goes ...

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With an orbital period around one year, much like Earth's 13-hour transit duration, HD 137010 b tantalises as Earth 2.0.

These icy bodies orbit the sun just like the major planets, yet they follow their own rules, often traveling along elongated ...

The Helix Nebula is one of the most well-known and commonly photographed planetary nebulae because it resembles the “ Eye of Sauron .” It is also one of the closest bright nebulae to Earth, located ...

Astronomers have discovered a distant dwarf planet orbiting beyond Neptune — a frozen world so far from the Sun that it challenges everything we know about how the solar system formed. Trump wants to ...

LONDON — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper's authors have ...

NASA's Hubble Space Telescope detected material from a Pluto-like body spiraling into a white dwarf star 260 light-years away from Earth. Credit: NASA / JPL-Caltech / Tim Pyle illustration For the ...

New research based on data from NASA’s Dawn mission suggests the dwarf planet Ceres may have once possessed a deep, long-lasting energy source capable of sustaining habitable conditions in its ancient ...