Then all you have to do is look up and enjoy the show. They include any space debris bigger than a molecule and smaller than about 330 feet (100 meters) - space debris. Just make sure you’re warm enough, and viewing from a safe, dark spot away from bright lights. No special equipment is needed to observe meteor showers. They tend to be bright and fast-moving, and they often leave persistent trails that can glow in the sky for a few seconds after they streak by. These meteors are fragments of dust left behind by Comet Halley in a trail that extends along its orbit. The shower’s name comes from the fact that you can trace the paths of its meteors back to an area on the sky near Orion. The Three Ms: Meteroid, Meteor, Meteorite A meteoroid is a natural fragment of rock less than 1 km (.6 mi) across that orbits the Sun. So it will interfere a bit when it rises a couple of hours before dawn, but shouldn’t totally spoil the viewing.
METEOR AND METEOROID FULL
This year, the Moon will be about 20% full on the peak nights. It’s a moderate shower, usually producing 10-20 meteors per hour at its peak, under clear, dark skies. The Orionid meteor shower is active throughout October and November, and peaks on the night of October 20. Before the small bit of comet or asteroid enters Earth ’s atmosphere, it floats through interplanetary space and is called a meteoroid. Note how its position changes with respect to Betelgeuse, Aldebaran, and the Pleiades over the weeks, and you’ll be witnessing what was once a source of intense curiosity for astronomers, but which we now know is just a sign of two planets passing in the night. A meteor is the streak of light that you see in the sky when a small piece of cometary or asteroidal material enters the atmosphere at high speed and burns up because of the frictional heating from the piece’s collision with the atoms and molecules in the atmosphere. So take note of Mars over the next few months, as it appears to reverse course. Meteoroids are lumps of rock or iron that orbit the sun, just as planets, asteroids, and comets do. Theyre all chunks off of something bigger. Meteoroids are found throughout the solar system, from the rocky inner planets to the remote reaches of the Kuiper belt. Most meteoroids are small, the size of pebbles or dust from a comets tail, but they can also be quite large.
During that period when we’re passing Mars, and before we round the bend in our orbit to pull away from it, we see Mars in retrograde, appearing to change direction, even though it’s still moving forward in its orbit. Meteoroids are lumps of rock or iron that orbit the sun, just as planets, asteroids, and comets do. About every 26 months, we overtake Mars, which is moving slower in its orbit. Showers of meteors, in which the rate of meteor sightings temporarily increases at approximately the same time each year, have been recorded since ancient times.
See, Earth and Mars are on these roughly circular paths around the Sun, like cars on a racetrack, and Earth is on the inner, faster track. Mars appears to change its direction of motion on the sky because Earth is passing the slower-moving Red Planet in its orbit. Sky chart showing the path of Mars over several months in 20, as it enters, then exits, retrograde motion.
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