Question

Use a diagram to show the three main types of galaxies

Answer 1

Answer:

The word galaxy is derived from the ancient Greek term for our own galaxy, galaxias, which means milky circle. According to Greek legend, the Milky Way is so named because the dusty band of stars spreading across the night sky was thought to be milky spray from Zeus' breastfeeding wife

Answer 2

Answer:

• Galaxies are divided into three main groups by astronomers: elliptical, spiral, and irregular.
• From dwarf galaxies with as few as 100 million stars to large galaxies with more than a trillion stars, these galaxies are found in a broad variety of sizes.
• A form of the galaxy known as an elliptical galaxy has a smooth, virtually featureless appearance and an approximately ellipsoidal shape. Along with spiral and lenticular galaxies, they are one of the four primary kinds of galaxies identified by Edwin Hubble in his Hubble sequence and 1936 book The Realm of the Nebulae.
• In a spiral galaxy, the revolving disc is surrounded by spiral 'arms' that extend outward from a compact center area. A spiral galaxy is the Milky Way. Galaxies may be divided into four categories: spiral, barred spiral, elliptical, and irregular.
• In contrast to spiral or elliptical galaxies, irregular galaxies lack a recognizable regular form. Regular Hubble sequence classifications do not apply to irregular galaxies, which often have a chaotic appearance, no nuclear bulge, and no sign of spiral arm structure.

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