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

Mercury takes only 88 Earth days to orbit the sun.

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

Here's when to watch next full moon and February's planetary parade across the night skies, starting with shiny bright Venus before Valentine's Day.

Two of these planets, Mercury and Saturn ... eventually fading into the sun's glare by month's end. Breaking space news, the latest updates on rocket launches, skywatching events and more!

ESA's Solar Orbiter captured views of the planet Mercury passing in front of the Sun. Multiple instruments aboard the spacecraft captured the imagery. Credit: Space.com | footage & orbit animation cou ...

Mercury joins the night sky to complete a seven-planet alignment just after sunset for the end of February. Saturn leaves our ...

In a celestial event known as a great alignment the five planets will be discernible with the naked eye, but to see Neptune ...

NASA has shared details of what to look out for in the night sky this month, with the moon appearing alongside a parade of planets.

But of these planets, which is nearest to the sun? Mercury is a strange little world ... mission — a collaboration between the European Space Agency and the Japan Aerospace Exploration Agency ...

Seven planets are set to appear in the night sky this month in a rare full planetary alignment. Mars, Jupiter, Uranus, Venus, Neptune, Mercury and Saturn will appear in a row on the evening of 28 ...