Viewed from above, our solar system's planetary orbits around the sun resemble rings around a bulls-eye. Each planet, including Earth, keeps to a roughly circular path, always maintaining the same ...

(Nanowerk News) Viewed from above, our solar system’s planetary orbits around the sun resemble rings around a bulls-eye. Each planet, including Earth, keeps to a roughly circular path, always ...

Researchers based at Aarhus University measured the orbital eccentricity of 74 small extrasolar planets and found their orbits to be close to circular, similar to the planets in the solar system, but ...

The eight planets in our solar system (yes, it's still weird for me to write "eight," too) orbit the sun in roughly circular paths, although they're ever-so-slightly ellipses instead of circles. A new ...

The planets of our solar system move in ellipses. We've known this, so we are told, ever since Johannes Kepler devised his laws of planetary motion in the early 1600s. While it's true that orbits are ...

Of all the planets in the solar system, Earth is distinctly hospitable to life because of its distance from the sun. As our planet follows its orbit, it gets sufficiently close to the sun as to take ...

A team of researchersfrom MIT and Aarhus University, Denmark, have discovered thatEarth-sized exoplanets orbit their parent stars in the same way thatour planet orbits our own Sun – maintaining a ...

Alpha Centauri, also known as Alpha Centauri A, is a three-star system. The brightest star, Alpha Centauri A, is quite ...