The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

It is not just within our Solar System that planet alignments are useful. Astronomers use alignments to probe many different ...

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

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

Astronomers using the James Webb Space Telescope (JWST) have uncovered a planet so extraordinary it has defied all existing ...

On Feb. 24, from west to east, you can see Mercury, Saturn, Neptune, Venus, Uranus, Jupiter and Mars, all spanning 117.5°, ...

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

Starting up again Saturday, a sweeping view of our solar system will glow in ... That means the Sun and the “Red Planet” are directly opposite from each other with Earth in the middle.

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

In the depth of winter, a sweeping view of our solar system will glow in the ... That means the Sun and the "Red Planet" are directly opposite from each other with Earth in the middle.