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What did ancients believe about comets?
Ancient Greece to the 19th century. The Greek philosopher Aristotle thought that comets were dry exhalations of Earth that caught fire high in the atmosphere or similar exhalations of the planets and stars. However, the Roman philosopher Seneca thought that comets were like the planets, though in much larger orbits.
One may also ask how old is the oldest comet?
The oldest picture of a comet is that of Halley's Comet in the Nuremberg Chronicle for AD 684. In respect to this, where do astronomers believe that comets come from? Where Do Comets Come From? It is thought that most comets originate in a vast cloud of ice and dust that surrounds the solar system. The Oort Cloud, as it is called, extends several thousand times farther from the Sun than Pluto, the outermost planet.
Why do stars twinkle?
As light from a star races through our atmosphere, it bounces and bumps through the different layers, bending the light before you see it. Since the hot and cold layers of air keep moving, the bending of the light changes too, which causes the star's appearance to wobble or twinkle. Is it good luck if you see a shooting star? While many cultures suggest that seeing these stars brings good luck, some believe you can use shooting stars for other things. If you spot a fallen star on your right, it means good luck, while one on your left says misfortune will follow. And shooting stars also bring luck on the road.
How rare is a shooting star?
How common is it to see a shooting star? Shooting stars are very common. Rock from space regularly enters the Earth's atmosphere, with around one million shooting stars occurring every day around the world.
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- What happens when the comets go near the Sun?
When a comet is close to the Sun, it emits dust and gases into a giant glowing head larger than most planets. The dust and gases form a tail that is millions of miles away from the Sun.
- Which are some famous comets that have been seen from Earth?
There is a comet. The most famous comet is Halley's. There is a Shoemaker Levy-9. It's called hyakutake. Hale Bopp. Borrelly is a comet. There is a comet Encke. Tuttel-Tempel. There is a comet Wild 2.
- Are comets and meteors the same thing?
A comet is a body of ice, rock and dust that can be several miles in diameter. It comes from a comet or asteroid. A meteorite enters the earth's atmosphere and falls to the ground. Also known as a shooting star.
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