Tonight – November 20, 2018 – as the moon travels in front of the constellations of the zodiac, it’ll appear in the general direction of the planet Uranus. Both the moon and Uranus are near the border of the constellations Pisces and Aries tonight. Although the bright moon will drown out Uranus from view tonight, the moon will mark the approximate position of Uranus in the starry sky.
What will you see of Pisces and Aries on this moonlit night? Hard to say, but you might make out Hamal, the brightest star in the constellation Aries, and possibly the four stars of the Great Square of Pegasus, as shown on the sky chart below, via the International Astronomical Union (IAU).
Sky chart of the constellation Pisces
If you’re familiar with the Great Square of Pegasus, you might be able to star-hop from there to find the constellations Pisces and Aries on a moonless evening in late November or the first week or two of December 2018. Uranus resides in front of the constellation Aries but very near the ecliptic and the Pisces border. Your best bet to finding Uranus is to locate the 4th-magnitude star Omicron Piscium in Pisces, which is easily visible to the unaided eye on a dark night.
Most stargazers need binoculars, a moon-free night and a detailed sky chart, like the one here or here or here. Uranus is bigger than Earth, but it’s also 20 times farther from the sun than Earth is from the sun.
Uranus is the seventh planet outward from the sun. Even on a moonless night, this world appears no brighter than the faintest visible stars.
The moon – presently near the border of the constellations Pisces and Aries – is waxing toward full and will be in front of the constellation Taurus on the night of the full moon.
Bottom line: On the night of November 20, 2018, the moon is located along our line of sight to the faint planet Uranus. But don’t expect to see Uranus in the moon’s glare.
Bruce McClure has served as lead writer for EarthSky's popular Tonight pages since 2004. He's a sundial aficionado, whose love for the heavens has taken him to Lake Titicaca in Bolivia and sailing in the North Atlantic, where he earned his celestial navigation certificate through the School of Ocean Sailing and Navigation. He also writes and hosts public astronomy programs and planetarium programs in and around his home in upstate New York.