The status of Pluto not withstanding, our solar system has 8 planets, but one astronomer believes we used to have a ninth ...

The solar system is a collection of celestial bodies held together by the sun's gravitational pull. Our solar system is located in the Milky Way galaxy. The solar system consists of eight planets, ...

Add Yahoo as a preferred source to see more of our stories on Google. What type of star it is: A yellow dwarf star The sun is the star at the center of our solar system. It's the largest, brightest ...

Researchers at the National High Magnetic Field Laboratory and Brookhaven National Laboratory have teamed up to get a fresh ...

Iron meteorites show the first bodies of the early solar system were 83% to 92% dry rock, with water arriving millions of ...

Ancient iron meteorites reveal that some of the Solar System’s first solid bodies were built mostly from tiny heat-forged rock beads called chondrules, while water-rich dust was largely excluded. The ...

When the solar system began building its first solid objects, it had two main ingredients available. One was chondrules—tiny, ...

When the solar system first took up the task of building solid bodies—such as planets, moons and protoplanets—it basically ...

The standard story of the origin of our solar system has gone like this: 4.6 billion years ago, a giant cloud of dust hung frozen in space. Then the explosion of a nearby star caused part of that dust ...

The number of rocky extrasolar planets being discovered continues to increase, but so too does the apparent diversity of such worlds.