Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our ...

Gravity, electromagnetism, the strong nuclear force, the weak nuclear force. For decades, physicists have recognized exactly ...

The sun is an incomprehensibly gigantic, constantly roiling nuclear furnace—but some days are even busier than others. Based ...

Thanks to the sheer mass of Jupiter and fellow gas giant Saturn, the Solar System barycenter is rarely in the center of the ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

Scientists have unlocked one of the solar system’s many secrets from an unexpected source: a planetarium show opening to the public on Monday. At the American Museum of Natural History last fall, ...

Max Planck Institute for Extraterrestrial Physics scientists have been able to disentangle the X-ray glow originating in our ...

Easy: Venus is the weirdest planet in the solar system. The most distant major planet from the sun and the last stop before ...

Our solar system is a smashing success. A new study suggests that from its earliest period — even before the last of its nebular gas had been consumed — Earth’s solar system and its planets looked ...

Scientists are exploring the possibility of a "fifth force" beyond the four known fundamental forces. This hypothetical force ...