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One of the most captivating celestial phenomena is a planetary alignment—when the planets line up in the night sky, forming a near‑straight line. While a “mini alignment” involving three planets is fairly common, a four‑planet alignment is rarer and can be enjoyed by the naked eye during January 2025.
Planetary alignments arise because the planets orbit the Sun in the ecliptic plane, so they often appear in a single row from our perspective. The number of visible planets varies, and the more planets that line up, the more extraordinary the event. From January through February 2025, observers can see Mars, Jupiter, Saturn, and Venus in a line.
Within a few hours after sunset in the Northern Hemisphere, Venus and Saturn will appear in the west‑southwest, reaching a conjunction—where they are closest in the sky—on January 17 and 18 before drifting apart. Jupiter will follow, positioned overhead, and Mars will shine bright throughout the month, appearing in opposition (directly opposite the Sun) and reaching its closest approach to Earth, which makes it appear larger and brighter than usual.
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While a four‑planet alignment is notable, a six‑planet lineup—often called a “planet parade”—is even more exceptional. Beginning in January 2025 and continuing into February, Neptune and Uranus join the procession. Viewing the alignment with a telescope and under dark skies will depend on the Moon’s phase and your geographic location; in the Northern Hemisphere, the optimal window is January 21‑25.
Uranus and Neptune, the seventh and eighth planets from the Sun, are fainter than the inner planets, so they can appear subtle in the lineup. From west to east, Neptune will appear as the third planet, slightly northeast of Venus, and just a few Moon lengths away on January 29‑30. Uranus follows, appearing nearly overhead near Jupiter and the Pleiades (the Seven Sisters) star cluster.
