Mercury takes only 88 Earth days to orbit the sun.

According to NASA, four to five planets being visible across the sky at the same time happens only once every few years.

You'll need high-powered binoculars or a telescope to see Neptune and Uranus. Saturn may be difficult to see since it will be ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

These embryos, somewhere between small planetesimals and fully formed planets, were abundant during the solar system's formative stages and played a critical role in planetary formation.

SEVEN planets are set be visible from Scotland as they light up the night sky this month. Mercury, Venus, Mars, Saturn, Jupiter, Uranus and Neptune will appear in a rare full alignment. It will be ...

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