"For this model, we assumed Alpha Centauri acts similarly to our solar system ... we think of it as a closed system. First, we thought Earth was the center of everything and then we found out ...

The moving metals in Earth's core create the planet's magnetic field. Our planet sits in a small corner of the Milky Way galaxy, 25,000 light-years from the galaxy's center. Our solar system lives ...

Ptolemy’s model and many earlier ideas of the Solar System had the Earth at the centre of it. As observations of the motions of the planets became more detailed, the descriptions of the Solar ...

With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of ...

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth ... the beginning of the solar system may be stuck inside Earth's solid core, new research ...

The Oort cloud is traditionally thought of as a vast shell of perhaps trillions of icy objects encasing our solar system ... galaxy's center, which ebbs and flows as our solar system ambles ...

According to the team, the gravitational pull of our solar system's planets and passing stars do not have much of an effect on the Oort Cloud. The team's new model ... match the Earth's orbit ...