Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

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

The enchanting dunescape stretches over 43 miles (70 km) along the coast and over 30 miles (50 km) inland. Lençois translates ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

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Starting up again Saturday, a sweeping view of our solar system will glow in the night sky. The planetary alignment, or a ...

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

Currently shining at its greatest brilliance for this current apparition, this dazzling evening "star" currently appears as a ...

There may be something about Earth’s remote places that root many of humanity’s greatest achievements in space. John Glenn (the first American to orbit the Earth) and Neil Armstrong (the first man ...

Californians watching the sky in February have the chance to view a parade of planets and a snow moon. The planetary alignment that began in January will continue into February, according to ...

The world's space agencies are keeping close watch on an asteroid heading our way, because there's currently a 1 in 83 chance ...