CASSIOPEIA

Overview

Cassiopeia is a circumpolar constellation in the northern sky, visible year-round from the Northern Hemisphere. Its most distinctive feature is the W shape (or M shape, depending on orientation) formed by five stars of second to third magnitude, making it one of the easiest constellations to identify.

It serves as an important guide for locating Polaris, the North Star, positioned on the opposite side of Polaris from the Big Dipper. Even when the Big Dipper dips below the horizon, Cassiopeia can be used to find true north.

Lying within the Milky Way, the region around Cassiopeia is rich in open clusters visible through binoculars or small telescopes — notably NGC 457 (the Owl Cluster) and NGC 7789 (Caroline's Rose Cluster).

How to Find It

From mid- to high northern latitudes, Cassiopeia is visible every night of the year, but climbs highest in autumn (October through December). Look north for the zigzag W shape — five stars of similar brightness (magnitudes 2–3) that stand out even without dark skies.

Draw a line from γ (the center of the W) through δ and extend it about five times the distance: you will arrive at Polaris. This technique is indispensable for finding the North Star during autumn and winter when the Big Dipper rides low. The W is compact enough to remain recognizable under urban light pollution.

Mythology and Culture

In Greek mythology, Cassiopeia was the queen of Ethiopia, wife of King Cepheus and mother of Princess Andromeda. She boasted that her beauty surpassed that of the Nereids (sea nymphs), provoking the wrath of Poseidon. As punishment she was chained to the sky, forced to circle the celestial pole — sometimes appearing upside-down near the horizon, a humiliating posture befitting her vanity.

Arab astronomers called this star group "the Stained Hand," imagining a palm adorned with henna dye. In Chinese astronomy, the stars form part of "Wang Liang," representing a charioteer.

In 1572, Danish astronomer Tycho Brahe observed a supernova (SN 1572, "Tycho's Star") within Cassiopeia's boundaries. This event challenged the prevailing belief that the heavens were unchanging and is considered a landmark moment in the birth of modern astronomy.

Star Trivia

Schedar (α Cas) — About 230 light-years away. An orange giant with a surface temperature of ~4,500 K and a steady magnitude of 2.24, anchoring one end of the W.

γ Cas (Tsih) — Roughly 550 light-years distant. An irregular variable star at the center of the W, fluctuating between magnitudes 1.6 and 3.0. A rapidly spinning B-type star, it is a prototype "Be star" that flings off a disk of gas at its equator.

Caph (β Cas) — A relatively nearby star at just 55 light-years. Classified as a Delta Scuti variable, it pulsates slightly over periods of a few hours, though it appears steady at magnitude 2.27 to the naked eye.

Tycho's Supernova Remnant — The remnant of the 1572 explosion is observable with X-ray telescopes and continues to expand at about 5,000 km/s.

In Gravity Weaver

Cassiopeia is the second constellation in the game, a 5-stage zone that traces the five stars of the W shape.

The signature gimmick is the Nebula — a sea-green gas cloud that gradually slows any Solar Shard passing through. A still-decelerating Shard may run out of time or fall into a black hole before reaching the goal.

Either build momentum with a Slingshot outside the cloud and punch through, or seed several small Gravity Wells inside to drag your Shards across. Watch the cloud boundary closely and commit to acceleration before entering the slow zone.