The solar system could be packed with 1 million alien visitors, space rocks shaken away from our cosmic neighbor Alpha ...

Using a NASA supercomputer to run models, researchers led by SwRI astronomer David Nesvorny now believe that the Inner Oort cloud looks like a spiral disk, around 0.24 light-years across, with two ...

Every planet of our solar system will line up tonight. Here’s how to see it - All seven planets will grace the sky on Friday ...

When we have five or more planets filing into a small sky area, an alignment is upgraded to parade status. Parade is not an ...

Mercury, Venus, Mars, Jupiter, Saturn, Neptune and Uranus could be visible, but not all can be seen by the naked eye.

Here are three myths about the appearance of the planets in the night sky — and how to set your expectations to get the most ...

Seven planets grace the sky at the end of February in what’s known as a planetary parade, though some will be difficult to spot NEW YORK -- Seven planets grace the sky at the end of February in ...

The Milky Way's tidal forces may be shaping the Oort Cloud's inner structure into a spiral shape.

By Katrina Miller Astute skywatchers may have already seen the striking line of planets across the night ... Now every other world in our solar system will be visible among the stars at the ...

Mercury, Venus, Mars, Jupiter, Saturn, Neptune and Uranus could be visible, but not all can be seen by the naked eye.

Seven planets are aligning in the night sky ... afford an uncommon opportunity to look up and appreciate our place in our solar system, with diverse worlds arrayed across the sky before our ...

Every Planet of Our Solar System Is Lining up in the February Night Sky NEW YORK (AP) — Seven planets grace the sky at the end of February in what's known as a planetary parade, though some will ...