As the holiday season arrives, the night sky transforms into a breathtaking canvas of twinkling lights and celestial wonders. The longest nights of the year bring some of the brightest constellations to view, making it an ideal time for stargazers to bundle up and enjoy the winter wonderland.
Comets C/2025 R2 SWAN and C/2025 A6 LEMMON, also known as Comet Lemmon, made a spectacular show in the sky over the past couple of months. Although they are now dimmer due to their distance from Earth, amateur astronomers can still spot them using telescopes or digital photographic scopes like ZWO SeeStar and Dwarf.
However, the real star of this month is the rare interstellar comet 3I/ATLAS. On December 19, it will make its closest approach to Earth, approximately 170 million miles away. While there's much misinformation about comets being alien spaceships, this celestial visitor can indeed be seen with a telescope, especially larger ones. The best viewing time is in the hours before morning twilight as the comet passes from Virgo to Leo.
On the other hand, stargazers won't be too thrilled during the first week of December due to a full moon on the 4th, known as the Cold Moon. This "supermoon" will not only brighten up the night sky with its intense lunar glow but also obliterate all but brighter stars. However, just in time for the annual Geminid meteor shower on December 13-14, the moon's light will significantly decrease, offering a better viewing experience.
The southern sky is home to some incredible celestial sights this month. The great horse Pegasus can be spotted riding high in the south-southwestern sky with Cassiopeia the Queen above it. Meanwhile, Orion the Hunter and its gang โ including Taurus the Bull, Pleiades star cluster, Auriga, Gemini the Twins, and Jupiter โ offer stunning visuals rising in the east by 8-9 pm.
Jupiter, now the brightest "star" in the night sky, can be seen climbing out of the eastern horizon with even a small telescope. Its larger moons and cloud bands are a treat to observe, especially when waiting for it to rise higher above Earth's atmosphere.
Saturn is also visible in the evening sky, offering a fascinating view of its ring system and many moons through smaller telescopes or binoculars.
Finally, Mercury will make an early morning appearance on December 17, but with limited detail even under powerful telescopes.
Comets C/2025 R2 SWAN and C/2025 A6 LEMMON, also known as Comet Lemmon, made a spectacular show in the sky over the past couple of months. Although they are now dimmer due to their distance from Earth, amateur astronomers can still spot them using telescopes or digital photographic scopes like ZWO SeeStar and Dwarf.
However, the real star of this month is the rare interstellar comet 3I/ATLAS. On December 19, it will make its closest approach to Earth, approximately 170 million miles away. While there's much misinformation about comets being alien spaceships, this celestial visitor can indeed be seen with a telescope, especially larger ones. The best viewing time is in the hours before morning twilight as the comet passes from Virgo to Leo.
On the other hand, stargazers won't be too thrilled during the first week of December due to a full moon on the 4th, known as the Cold Moon. This "supermoon" will not only brighten up the night sky with its intense lunar glow but also obliterate all but brighter stars. However, just in time for the annual Geminid meteor shower on December 13-14, the moon's light will significantly decrease, offering a better viewing experience.
The southern sky is home to some incredible celestial sights this month. The great horse Pegasus can be spotted riding high in the south-southwestern sky with Cassiopeia the Queen above it. Meanwhile, Orion the Hunter and its gang โ including Taurus the Bull, Pleiades star cluster, Auriga, Gemini the Twins, and Jupiter โ offer stunning visuals rising in the east by 8-9 pm.
Jupiter, now the brightest "star" in the night sky, can be seen climbing out of the eastern horizon with even a small telescope. Its larger moons and cloud bands are a treat to observe, especially when waiting for it to rise higher above Earth's atmosphere.
Saturn is also visible in the evening sky, offering a fascinating view of its ring system and many moons through smaller telescopes or binoculars.
Finally, Mercury will make an early morning appearance on December 17, but with limited detail even under powerful telescopes.