Stargazing Guide: Celestial Events from March 27 to April 3

On Friday, March 27, the Moon passes through the outskirts of the famous Beehive Cluster (M44) in Cancer, standing north of the cluster's center around midnight Eastern time. Earlier, Venus lingers after sunset, heading towards the western horizon. With a magnitude of -3.9, it's a bright object to enjoy before it gets fully dark. Through a telescope, Venus appears almost fully illuminated, with 94% of its clouds lit. The planet is approximately 1.58 astronomical units from Earth.

Saturday, March 28, is the best day to observe the constellation Corvus, the Crow, as it lies directly opposite the Sun in the sky and is visible all night long. Around 10 PM, Corvus is located 20° high in the southeast. This constellation, although small, is easy to identify thanks to the brightness of its main stars. It is recommended to locate bright Spica in Virgo to find Delta (δ) Corvi and Gamma (γ) Crv, which form the top of the imaginary box of Corvus.

On Sunday, March 29, the Moon passes close to Regulus, the alpha star of Leo. Regulus, with a magnitude of 1.4, is near the ecliptic. The sickle of Leo, an asterism shaped like an inverted question mark, is visible, with Regulus at the base. Several stars can be identified that trace the shape of the sickle, including Eta (η) Leonis and Gamma Leo. Many observers also interpret the shape of the sickle as the head of the Lion.

On Monday, March 30, the star Vega in Lyra, cataloged as Alpha Lyrae and the fifth brightest star in the sky, makes its appearance. Vega is part of the famous Summer Triangle. Vega is more massive and luminous than our Sun. It is notable for its orientation in space, with its pole almost directly towards Earth. This causes a slight flattening and a phenomenon called 'gravity darkening'.

Tuesday, March 31, is the last opportunity to observe deep-sky objects in the winter constellations. NGC 2301, an open cluster of young stars in Monoceros, is a good target. This cluster, also known as the Great Bird Cluster, contains about 80 members of varying brightness. It was nicknamed by Astronomy contributor Phil Harrington, who imagined it as a bird in flight.

Wednesday, April 1, begins with the Full Moon, also known as the Pink Moon. Although deep-sky observation is more difficult during the Full Moon, double stars are still excellent targets. It is recommended to observe Izar (Epsilon Boo), a double star in the constellation Boötes. Astronomer Friedrich Georg Wilhelm von Struve called this pair 'Pulcherrima', which means 'the most beautiful' in Latin.

On Thursday, April 2, it is recommended to observe Jupiter, with Europa passing north of Callisto and Ganymede's shadow transiting. You should start observing around 11 PM EDT. Ganymede and its shadow, along with Io, are located in the west of Jupiter. Europa and Callisto are located in the east, with Europa moving faster westward. At 11:30 PM EDT, Europa will move directly north of Callisto. Ganymede's shadow will end shortly after 1:22 AM EDT on April 3.

On Friday, April 3, Mercury reaches its greatest western elongation, at 28° from the Sun. Visible in the morning sky, the small planet has a magnitude of 0.4 and rises around 5:45 AM local time. It can be observed about 4° above the eastern horizon approximately half an hour before sunrise. Through a telescope, the planet's disk spans 8" in the sky. Mars, with a magnitude of 1.3, is also visible, but requires a clear horizon.