Shooting stars look like stars that quickly shoot across the sky, but they are not stars. A shooting star is really a small piece of rock or dust that hits Earth's atmosphere from space. It moves so fast that it heats up and glows as it moves through the atmosphere. Shooting stars are actually what astronomers call meteors. Most meteors burn up in the atmosphere before they reach the ground. However, once in a while a meteor is large enough than some of it survives and reaches Earth's surface. Then it is called a meteorite.
While on a trip with friends in colombia in the caf region of quindio one night by the pool at a Vila we stayed at in the middle of nowhere for a bit of fun one night I said first one to see a shooting star gets 50 dollars. Anyway as it was a clear sky needless to say we saw quite a few. No light pollution and an amazing sky.
While concentrating on my bit of sky to spot shooting stars I noticed something quite strange. One star seemed to disappear and then com back as if someone had switched off a light then switched it back on again. First I thought it might have been a Satlite or something passing in front of it. But then it happened again the star disappeared as if switching off a light and then came back. The time between each appearance and disappearance of the star I would guess around 15-20 seconds and it happened about say 5 or 6 times until it disappeared all together.
I managed to get one of my other friends to see it for the last 2 appearances.
My question is What did I see? Was I seeing the death of a star? I know nothing about astronomy but it has been something that has puzzled me and bothered me since seeing it. I hope you can shed some light on the matter.
Thanking you in advance for taking time to read my enquiry. I sincerely hope you find time to reply.
Kind regards
Mark Clarkson
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I saw a shooting star as I was standing on the roof of my home. My home is double storey. And the height of that shooting star that I saw was maybe 10 to 13 meters. It was burned down at that height. My question is why haven't the shooting stars burnt completely when they enter the earth's atmosphere where the air is thick? Why sometimes a small piece gets to come very close to the ground and then burns?
What you described is simply impossible. Meteors glow because its surface is being vaporized. When they enter the upper layers of the Earth's atmosphere they are typically travelling several kilometers per second (that's thousands of mph). They are going so fast that the air in front of it doesn't have time to get out of the way of the hypersonic meteor, so the air gets compressed. Compressed air naturally heats up, and because the air can't get out of the way, it stays very hot. This heat will vaporize the leading surface of the meteor (the "front", so to speak), making it glow very brightly. It also leaves a trail of plasma, which is the streak you see behind it.
As the meteor travels lower and lower into the atmosphere, it will slow down. Once it gets to about 15 km (9 miles up), the meteor will have slowed down to below 2 km/s (4000 mph). This speed is too slow to vaporize the surface. Thus, the meteor stops glowing red hot, and is essentially invisible from then on. Eventually it will slow down to about 150 m/s (300 mph). That's only a bit faster than terminal velocity of the average human, and slower than a jet plane. Eventually it will hit the ground at roughly the same as ambient temperature (this vaporization process is very heat efficient).
You claimed that you saw the meteor 10-13 m above your head, but this would not be possible. In order to be glowing, it would need to be travelling at least 2 km/s (4000 mph), which is not possible for a meteor as it would have already slowed down in its flight.
I think you may have been mistaken. Distance is generally hard to measure. In fact, the ancients did not know if the Sun was close by and fairly small, or far away and fairly large. The same went for the Moon. It was only until the Greeks figured out how to measure the distance using some neat trigonometry that we got the Moon's size distance and size. They also got the Sun's size and distance but it was pretty far off, though the way of measuring was correct.
Shooting stars are a group of herbaceous perennials in the primula family (Primulaceae). There are over a dozen species in the genus Dodecatheon, all native to North America. The most widespread and common one is D. meadia (sometimes classified as Primula meadia), variously called shooting star, eastern shooting star, American cowslip, roosterheads, or prairie pointers.
In mid-spring one or more thin but sturdy, green or red, leafless flower scapes up to 18 inches tall are sent up from the rosette of leaves. Each terminal umbel has 8-20 flowers that open in late spring. The one-inch long, dangling flowers each have five upward reflexed petals and a cluster of yellow stamens surrounding a single, purplish green style that converge to a downward point. Within any population the petals naturally vary widely in color from purple to pink or rose or white. Northern populations tend to have lavender to purple petals and southern populations skew more toward white petals but there is considerable variation across its range. The base of the fused petals have uneven rings of white, yellow and maroon around the base. Flowers are visited by bumblebees and some other native bees to collect pollen, but not honeybees as the flowers do not provide nectar. Pollinated flowers are followed by erect oval to cylindrical mahogany-colored capsules to inch long that contain very fine seeds that are dispersed when wind blows the capsules.
Shooting star grows best in partial shade, but can tolerate full sun in cooler zones and full shade as long as the soil is moist (but not wet) in the spring. It tolerates clay soil, but prefers humusy, rocky or sandy, well-drained soils. Since it naturally dies back in summer, drought at that time does not affect it but it does not need a dry dormant period like most of the western species do. Plant it where taller plants will not overtake it until later in the season. It is not favored by deer.
Use shooting start in shady native plant or wildflower gardens, woodland garden or for naturalizing. It combines well with other native spring wildflowers including bloodroot (Sanguinaria canadensis), cutleaf toothwort (Cardamine concatenata), prairie smoke (Geum triflorum), trillium, twinleaf (Jeffersonia diphylla), and woodland phlox (Phlox divaricata).
In ornamental gardens place it near the front of beds and borders where the flowers can be easily viewed. It will grow up through some groundcovers, such as Vinca minor, or position them near other slower-developing plants that will cover up the senescing foliage later in the year.
Shooting star is propagated from seed or by division in fall when dormant. It can be difficult to grow from seed, which needs to be sown fresh in summer or stratified (moist or dry) over the winter. Seedlings grow very slowly, taking 3-4 years to flower.
There are a few cultivars or forms of D. meadia, as well as the white-flowered D. meadia f. album:
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We've known since the beginning of the KH series that the stars are all the worlds. But I just realized, when in BBS, Ven asks what is a star, Terra tells him they are all the worlds out there and many more they don't know of. And moments later in another clip you can see a shooting star; so like, a world was flying around in space or what?
You mean Riku, not Kairi. At that time, she was still in Radiant Garden. And Kairi isn't seeing a shooting star. Like in the KH1 ending, it shows all the worlds that had fallen to the darkness returning to normal.
Shooting stars, also known as fallen stars, send streaks of light across the night sky before burning out into a point of inky blackness. Superstition has it that simply spotting a falling space rock can bring good fortune, though the rationale behind this good omen changes based on who's telling the story.
In North America and Eurasia, it is widely believed that your wish is granted if made upon a falling star. Scholars suggest the practice of making wishes on shooting stars has its origins in the popular belief that shooting stars appeared when the gods opened heaven to peer at earth. If you make your wish before the shooting star disappears, the gods may hear and grant wishes [source: Burke].
Not everyone believes a shooting star is a good sign. In the ancient cultures of Mesopotamia, a shooting star almost always meant a bad omen. In Greek mythology, shooting stars were the result of the god Zeus' throwing stones down from the heavens to Earth when he was angry [source: Burke].
Your chances of seeing stars falling will increase dramatically during a meteor shower. During yearly meteor showers like the Leonids in November and the Perseids in August, you can see hundreds of meteors per hour as small rocks break off a larger comet [source: National Geographic].
Have you ever seen a blue or green shooting star? Meteors can have different colors, based on the type of metal they contain. Magnesium gives shooting stars a blue-green light, iron can make them look yellow, sodium adds an orange-yellow light and ionized calcium brings violet. Atmospheric nitrogen and oxygen in the air surrounding the meteor can make them look red [source: Nasa].
Shooting stars make a spectacular sight in the night sky. I saw one last week, when I was out star-gazing with a couple of friends. None of us seemed to be able to trace the history behind shooting stars and wishing upon them, so I thought I owe this post to my blog.
For starters, shooting stars are misnomers. These streaks of light are actually broken little pieces of rock and dust, which, when close to the Earth, enter its atmosphere at blinding speeds, and heat up, glow and burn down. Apparently, on any given night, a shooting star should be visible every 10-15 minutes. This holds especially at the time just before dawn, when we face the direction in which the Earth moves. The frequency of shooting stars increases at certain times of the year, when the Earth passes through a region particularly crowded with dust and rocks (Meteor shower). 152ee80cbc
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