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

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 ...

Discover how a giant interstellar cloud known as the solar nebula gave birth to our solar system and everything in it. The solar system as we know it began life as a vast, swirling cloud of gas and ...

Artist rendition of the protosun and the solar nebula. Oxygen isotopes can be altered by ultraviolet light (gold arrows) in this environment as well. Short-lived radiogenic isotopes of aluminum ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

Get on the horse and ride This week’s large-telescope target is the famous Horsehead Nebula in Orion the Hunter. Because it occupies the 33rd slot on American astronomer Edward Emerson Barnard ...