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

but would have needed to be heavy enough to cause a gravitational disturbance that had lasting effects on the Solar System’s disk and planetary orbits. Our s is thought to have emerged from a nebula—a ...

In a stunning astronomical discovery, the James Webb Space Telescope (JWST) has unveiled a spectacular image of HH 30, a ...

Scientists have long debated why Earth and Mars lack certain essential elements. A new study reveals that these missing ...

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

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 ...

Earliest inner solar system planetesimals shaped the inventory of moderately volatile elements in terrestrial planets.

This story appears in the July 2013 issue of National Geographic magazine. The dust speck had been plucked from the tail of a comet more than 200 million miles away. Now, under an electron ...