Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

Astronomers have discovered extremely powerful winds pummeling the equator of WASP-127b, a giant exoplanet. Reaching speeds ...

The eight major planets of our Solar System orbit the Sun in the same flat ... One of the main outstanding questions about the Sun is what drives its 11-year cycle between periods of peak activity ...

Mercury will join them in late February. NASA / JPL-Caltech The eight planets in our solar system all orbit the sun in roughly the same flat plane, known as the ecliptic—but they move at ...

It seems something extraordinarily large stirred it up. However, the disk of the Solar System is relatively warped, and the orbits of its planets are slightly tilted and elliptical. It is quite ...

Astronomers have discovered extremely powerful winds pummeling the equator of WASP-127b, a giant exoplanet. Reaching speeds ...

The same year that Pluto was ignominiously stripped of its status ... the notion that there is a ninth planet lurking out in the darkness of our Solar System beyong Neptune.

The planets in our solar system orbit the sun essentially along a line across the sky in a plane called the ecliptic. For that reason, planets in our Earthly sky always appear somewhere along a ...