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• Astronomy

  Astronomy is the study of

  everything in the universe

  beyond Earth’s atmosphere.

  That includes objects we can see

  with our naked eyes, like the

  Sun , the Moon , the planets,

  and the stars .
• Astrology

  Refers to the belief that the

  position of the sun, moon,

  planets, and stars, affect

  people’s personality and

  influences their lives.
• Constellations as part of religion - Many cultures believed that the positions of the stars were their God's way of

  telling stories.
• Constellations as a calendar and navigation tool - used to create and track the calendar sothey knew when to plant crops and harvest them. Constellations were also used for navigation and to help sailors travel across oceans.
• Constellations as a landmark - Because constellations are in a fixed location, they are often used as landmarks in the sky. Many stars, nebulae, and other objects are named after the constellations they are found in.
• Comet - It is believed that the

  appearance of a Comet is a sign

  of destructive and tragic events,
• Comets are cosmic snowballs of frozen gases, rock, and dust

  that orbit the Sun. When a comet's orbit brings it close to the

  Sun, it heats up and spews dust and gases into a giant glowing

  head larger than most planets.
• A meteor is a streak of light in the sky caused by a meteoroid

  passing through Earth's atmosphere.
• Coment

  • made up of frozen gases/ice, rock, and dust
  • from the Greek word “kometes” which means “long-haired star”
  • ”dirty snowballs”
  • “fossils of the solar system”
  • frozen leftovers from the formation of the solar system
• Parts of a Comet

  Nucleus

  ● solid central part of the comet

  ● made up of rock, dust, and ice

  Coma

  ● cloudlike structure around the

  nucleus that is formed when ice

  turns to gas as the comet gets

  closer to the Sun
• Dust Tail

  ● is formed when the sun’s

  radiation pushes dust particles

  away from the coma

  Ion Tail

  ● is formed when charged particles

  from the sun convert the comet’s

  gases into ions
• Classification of Comets

  • Long Period Comets

  Oort Cloud

  • Short Period Comets

  Kuiper Belt
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• Meteoroid -

  • small chunk of rock or metal  traveling in outer space
  • from the Greek word  “meteoros” which means “high  in the air”
• • A meteoroid is a space debris  that is usually rocky and  metallic in nature that orbits  the solar system.
• • When a meteoroid enters  Earth’s atmosphere and burns  up creating a streak of light, it  becomes a meteor.
• A meteoroid that reaches the  surface of the Earth is called a  meteorite.
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