If everything in our solar system formed from the same solar nebula, why do the planets have different compositions? Herbert WichTitusville, Florida To better understand why the planets have variable ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

This NASA/ESA Hubble Space Telescope image presents a visually striking collection of interstellar gas and dust. The Orion Nebula is a picture book of star formation, from the massive, young stars ...

We are staring "right down the barrel of it, which is really quite surprising to me — we're just lucky." One of the most photographed objects in the night sky is the Ring Nebula, wreckage of a ...

From vivid nebulae to a comprehensive view of our evolving universe, check out these 7 amazing deep-field images captured by ...

Hubble Telescope image of the Horsehead Nebula. (Credit: T.A.Rector (NOIRLab/NSF/AURA) & Hubble Heritage Team (STScI/AURA/NASA)) ...

When it happens to the Sun, its mantle will be flung outward to form a planetary nebula, while its core will linger on as a white dwarf. Named because their color and size made them resemble ...

A nearby planetary system is seen in detail in our first look at an asteroid belt outside our solar system in infrared light ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in circular orbits around the Sun on a flat disk. But in reality, our Solar ...