Skywatchers will have a chance this weekend to witness a rare celestial display as six planets appear to align in what astronomers call a “planetary parade.”
The unusual event reaches its peak Saturday evening, when Mercury, Venus, Jupiter and Saturn will all be visible to the naked eye under clear skies. Uranus and Neptune will also join the lineup, though binoculars or a telescope will be needed to spot the two more distant planets.
A planetary parade occurs when multiple planets cluster on the same side of the sun, creating the illusion from Earth that they are lined up in the sky. The planets are not actually arranged in a perfect straight line, but their positions along the ecliptic — the apparent path of the sun — make them appear grouped together.
While it is common to see two or three bright planets shortly after sunset, gatherings of four or five visible at once are far less frequent, typically occurring only every few years. Six-planet alignments are rarer still, making this weekend’s display a noteworthy opportunity for stargazers.
For the best view, astronomers recommend heading outdoors about an hour after sunset and looking toward the western sky. Mercury, Venus and Saturn will appear relatively close to the horizon, so an unobstructed view free from buildings and trees is ideal. Jupiter will shine higher above them, with Uranus and Neptune positioned nearby but requiring optical aid to distinguish.
Clear skies will be key, though the alignment is expected to remain visible for several days beyond Saturday. Observers are encouraged not to delay, as Mercury will gradually dip below the horizon in the coming days, making it harder to see.
Distinguishing planets from stars can be simple. Planets typically appear as steady points of light, while stars twinkle due to atmospheric turbulence affecting their more distant light. That steady glow can help observers identify the planetary participants in the evening sky.
Recent years have brought several notable alignments, including impressive six- and even seven-planet gatherings. Still, astronomers say each event offers a unique viewing experience depending on planetary positions and sky conditions.
Source: The Weather Channel