Irish astronomy week, which begins this weekend and runs to March 8th, will coincide with the “great planetary alignment” taking place in our skies. “The event is planned to coincide with a magnificent sky feast for the eyes,” said Ronan Newman, the Mayo-based astronomer organising the week.

Six planets are currently gracing our night sky, forming an arc on our celestial dome. From west to east: Saturn, Mercury, Venus, Uranus, Jupiter and Mars.

Observers could see up to seven planets line up in the sky after sunset on Friday, but you may need a telescope to see them all.

After dusk on Friday night, seven planets are expected to align in the night sky. But you'll need binoculars or a telescope to see them all.

Houstonians will be able to see seven planets in the sky this weekend in what's called a planetary parade. Unfortunately, however, some may not be spotted with the naked eye. Just after dark, it will be possible to view Mercury,

Mars, Jupiter, Uranus, Neptune, Mercury, Saturn and Venus -- will be visible simultaneously and look like they're all aligned when seen from Earth after sunset. A long awaited astronomical event dubbed as the planet parade or planetary alignment when four planets are visible to the naked eye on the evening sky,