Astronomers have revealed new evidence that not just one, but four tiny planets are circling around Barnard's Star, the ...

The only planet that is out of the viewing loop this month is Saturn, which is too close to the sun to be seen, reaching solar conjunction on March 12. Earth will pass through the plane of Saturn ...

The astronomical linkup is fairly common and can happen at least every year depending on the number of planets.

Exciting new research suggests there are four miniature planets orbiting Barnard’s Star, each thought to be just 20 to 30% ...

Clear skies will also be necessary to see all the planets. The planets in the solar system orbit the sun, just as Earth does. Every planet orbits at a different speed and distance. During these ...

Seven planets will align in a rare planetary parade, offering a view of five planets visible to the naked eye in the night ...

Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in ...

Like the planets in our solar system orbit the sun, most exoplanets also orbit a star. To date there are over 5500 known exoplanets confirmed by NASA, with trillions more predicted to exist within ...

A new study by Rice University researchers Sho Shibata and Andre Izidoro presents a compelling new model for the formation of ...

(Correction: An earlier version of this story misstated how far Pluto is from the sun ... planet. Here's what to know about the short life of what was, for a single human lifetime, the solar ...

The solar system has eight planets. Moving out from the sun ... The new definition requires that a planet: orbit the sun is large enough to be round has cleared its orbit of other small bodies.

Astronomers have revealed new evidence that there are not just one but four tiny planets circling around Barnard's Star, the second-nearest star system to Earth.