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| Table of Contents | Enchanted Learning All About Astronomy |
Site Index |
| Our Solar System | Stars | Glossary | Printables, Worksheets, and Activities | ||||||
| The Sun | The Planets | The Moon | Asteroids | Kuiper Belt | Comets | Meteors | Astronomers | ||
| The Stars |
| Lifecycle | Nuclear Fusion | Brightest Stars | Galaxies | Other Solar Systems | Constellations | Why Stars Twinkle | |
| Birth | Death | Star Types | Closest Stars | Nebulae | Major Stars | The Zodiac | Activities, Links |
| Spiral Galaxies | Elliptical Galaxies | Irregular Galaxies | Lenticular Galaxies | Active Galaxies | Clusters of Galaxies |
Peculiar Galaxies:
A peculiar galaxy is an irregular galaxy that has an abnormal shape (neither elliptical, spiral, nor lenticular) and/or has another unusual characteristic, like jets of gas spewing from the nucleus, unusual amounts of dust, low surface brightness, etc. They are probably formed as galaxies collide or have companion galaxies that influence them. Peculiar galaxies are generally smaller and optically dimmer than regular galaxies. They have the designation p or pec at the end of their name. In 1966, the astronomer Halton Arp published a catalogue of 338 of these galaxies in his "Atlas of Peculiar Galaxies." Arp suggested that peculiar galaxies create stars in intense bursts. Ring galaxies are a type of peculiar galaxy
Some Irregular Galaxies
LARGE MAGELLANIC CLOUD
The Large Magellanic Cloud (LMC) is an irregular-shaped galaxy in the Local Group. The irregular shape may be the result of a disturbance, perhaps a collision of two galaxies. The Large Magellanic Cloud (LMC) is near the constellation Dorado, and is 163,000 light-years away.
SMALL MAGELLANIC CLOUD
The Small Magellanic Cloud (SMC) is an irregular-shaped galaxy in the Local Group. The irregular shape may be the result of a disturbance, perhaps a collision of two galaxies. The Small Magellanic Cloud (SMC) is near the constellation Tucana, and is under 200,000 light-years away.
CARTWHEEL GALAXY
The Cartwheel Galaxy has a ring-like structure that is the result of a head-on collision of two galaxies! It started out as a regular spiral galaxy that was hit by a smaller galaxy. The ring-like band of stars formed much like ripples form in water when a rock is tossed into it. The Cartwheel Galaxy is about 500 million light-years from Earth in the constellation Sculptor.
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