Scientists think they’ve detected a new planet beyond Neptune. Find out why experts believe 'Planet X' might support alien ...

Speaking of grabbing your coat, the planet is so far from the sun, most scientists believe it would be an ice giant with ...

Like a flame in the darkness, Pluto retrograde in Aquarius inspires the spark within, helping us to strategize ways to enrich ...

The solar system consists of our star, the sun, and everything bound to it by gravity: the planets Mercury, Venus, Earth, ...

An international team used 40 years' worth of data from two space probes to track down what they believe are signs of this ...

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Pluto was discovered at Lowell Observatory in Flagstaff in 1930. Planet X, as it was called, was quickly renamed Pluto, the ...

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

Robert Lee Hotz covered new research and its impact on society for The Wall Street Journal.

A Florida woman faces charges after deputies say she posed as an ICE agent and kidnapped her ex-boyfriend's wife. (Courtesy: Bay County Sheriff's Office.) ...

Perhaps the best known of all comets is Halley, correctly pronounced so that it rhymes with rally, not daily. It is named after the 17th-18th century astronomer Edmond Halley. This ...

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...