- You should really know more about the floaties in the atmosphere around the Earth!
What do you know about comets? Here are some fun facts about these objects flying around the Earth.
- Comets appear in the sky like streaks because they’re actively melting.
- The core of a comet is called the comet nucleus and can be
several kilometers wide, like the size of a small town. - Comets are composed of frozen water, dust and frozen gas like carbon dioxide, methane and ammonia.
- Scientists have gotten very close to comets during space missions and can actually study photos to measure the light and radiation they put out.
- A bright object in the sky isn’t always a comet and they could be meteors or asteroids.
- The Halley-Bopp Comet has a possibility of being seeing from earth for 18 total months, in turn making it the most widely observed comet in history.
- Comets have an icy core.
- The bright head of a comet is called a coma.
- The Kuiper Belt is massive and near Neptune. It’s full of icy objects and named after Gerard Kuiper, one of the scientists who suspected it existed.
- We can see Halley’s Comet from earth every 75-79 years.
- Comets come from two regions in our solar system, the Oort Cloud and Kuiper Belt.
- Halley’s Comet appears in ancient manuscripts, artwork, and historical accounts through human history.
- Some comets have highly elliptical orbits, bringing them closer to the sun and making them easier to see where as others, called long-period comets, that make more rare and unpredictable appearances.
- They allow scientists a view into the distant past, speculating that organic compounds necessary for life on Earth that came from comets that impacted the surface of our planet.
- The Oort cloud is filled with icy space objects as well, discovered in 1950 by Dutch astronomer Jan Oort.
- The word comet comes from an old Greek work, kometes, meaning long hair star.
- Halley’s Comet was named after English astronomer Edmond Halley, who predicted its return in 1758.
- A comet can stretch for millions of miles through space, shaped by their orbit around the sun, due to the process of heating and releasing the particles through the comet’s tail and coma.
- NASA’s Stardust Mission was the first to collect comet dust samples and bring them back to the Earth to study. It was taken from the coma of Comet Wild-2.
- Comets are categorized by their orbital periods meaning the amount of time it takes them to orbit around the sun.
- Some are are only seen from earth every 1,000 years and usually come from the Oort cloud.
- The long, glowing dust tail is also called the ion tail.
- Short-period comets orbit the sun in less than 200 years.
- In 1986, The European Space Agency’s Giotto Mission took the closest pictures even taken of Halley’s Comet.
Did you know all of these facts about comets? Tell me something you learned in the comments!