Questions tagged [meteor]

Questions on objects passing through the atmosphere which leave visible wakes of incandescent material.

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5
votes
1answer
168 views

Did I see a meteor or a re-entry?

Last night (January 21, 2015, possibly 5:30 UTC), from my house in northern California, I saw a moving point of light in the sky, going west to east, crossing about 120 degrees of sky in 5 seconds or ...
2
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0answers
36 views

Have any meteoroids been detected before they reached the Earth's atmosphere?

Once a meteoroid starts burning up in the atmosphere, it becomes a visible meteor. Have any meteoroids been detected before they started to burn in the atmosphere? If yes, what is the ballpark ...
22
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1answer
2k views

How long between the moment a meteor is first visible and the moment a meteorite hits the ground?

A meteor is usually only visible for a couple seconds at most, but I would guess that it usually stops being visible high above the ground. Meteors often don't make it to the ground as they completely ...
18
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3answers
3k views

What is the difference between asteroids, comets and meteors?

Some celestial objects seem to be referred to as asteroids, some as comets, and some as meteors or meteorites. What is the distinction between all of these different objects? Are any of them the same?...
2
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1answer
472 views

Why do most meteors vanish just before hitting the ground?

Many times we see in the sky that most of the meteor shower trails vanish when they are about to strike the earth several feet above the ground. Why does this happen? They could strike the earth's ...
2
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0answers
46 views

What could have this blue “bouncing” trail been? [closed]

Last night at around 8:45 PM (UK Time), I saw something I've never seen before. It was a cloudy night and I saw a flash in the sky. When I looked towards it, I saw something that looked like a ...
2
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1answer
87 views

Origins of meteorites?

I am aware that the vast majority of meteorites come from the asteroid belt (including 4 Vesta), with some from the Moon and Mars. Are there any other locations from which meteorites have originated (...
9
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2answers
2k views

Where is the Perseids meteor shower coming from?

Swift–Tuttle Comet has orbital period of 133.28 years. Yet, people say that debris and dust from this comet causes this meteor shower. This does not make any sense. Or do they want to say that from ...
5
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1answer
57 views

Strange trail left by shooting star [duplicate]

I saw something really odd last night that I cannot understand. Last night I got up around 3am to catch a glimpse of the upcoming Perseids meteor shower, now I know it's not peaking until next week ...
5
votes
1answer
6k views

Do meteorites streak across the sky in the same direction?

Once while camping with my family as a child we all watched a meteor shower in the summer (in the month of August). All the meteorites streaked across the sky in the same direction. Obviously, this ...
1
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1answer
20 views

Is there an all sky meteor watch with spectroscopy?

I assume performing spectroscopy on meteors would give us information about the composition of the outer layers of meteoroids, which we can't study on finds because it has already burned up. This ...
1
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1answer
34 views

apparent and absolute magnitude of meteors and space debris

I have a question regarding the apparent and absolute magnitude of space debris objects or meteors reentering the earth's atmosphere. I already understand the difference between apparent and absolute ...
7
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1answer
64 views

Where can I find historic rates of meteor impact events?

I have a friend that watches a lot of TV news and they have the impression that impact events are becoming more common than in recent memory. Does the evidence support or refute this? Thinking it ...
1
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2answers
95 views

What could be the name of a huge asteroid I watched some years ago?

Some years ago I was with my family in Venezuela. I'm not sure about the date/hour, but probably it was somewhat around 2007 in the afternoon. We were talking when one of us saw a huge meteor moving "...
12
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2answers
1k views

How complicated is the heating of meteors?

When any gas, including our atmosphere, is compressed, it's temperature rises. When a meteor is falling through the atmosphere, it is compressing the air below it. Because this makes the air hotter ...
0
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3answers
8k views

Slow moving star like objects in the night sky [duplicate]

So yesterday at about 2am I was watching the sky when I saw a small star like object moving very slowly across the sky. My initial thought was that it was a satellite due to the fact it was moving so ...
3
votes
1answer
144 views

Why is this shooting star wavy or squiggly toward the end of it's visible streak

I was taking photos of some stars when I noticed this shooting star was wavy toward the end (start?) of it's trail. My cousin suggesting that it could be the CCD in my camera or as it spiralling as it ...
1
vote
1answer
121 views

What makes some meteor showers continue for days, while the “Unicorn shower” can be shorter than one hour?

The Washington Post's One hundred meteors in 15 minutes? ‘Short-lived outburst’ of shooting stars forecast for Thursday night. says: A “short-lived outburst” is forecast for Thursday evening around ...
6
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2answers
219 views

Are meteors visible on Mars?

If a person were standing on the surface of Mars, under ideal viewing conditions for seeing a meteor: no clouds, the sun has long set, would a meteor be visible to the naked eye considering how thin ...
0
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0answers
24 views

Series of Star Looking Objects Moving in a Perfect Straight Line [duplicate]

I was out and the moon was shining. I looked at the sky just because of the moon, because the light of moon was making things visible. I just looked at the sky. What I saw was spectacular. I don't ...
-3
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1answer
1k views

Why do shooting stars burn close to the ground sometimes?

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. ...
9
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1answer
1k views

What factors influence the Widmanstätten pattern in iron meteorites?

The cores of iron meteorites exhibit beautiful Widmanstätten patterns, as shown below in the Alvord meteorite (photo by Jim H): I understand these patterns form when the molton nickel-iron core of ...
0
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1answer
171 views

Could the Sun have liquid iron in orbit?

How close of an orbit to the Sun could an iron meteor get before it melts into a ball?
20
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1answer
2k views

Why did this meteor appear cyan?

A meteor recently flashed over Queenland. The meteor has been described by various people as appearing cyan or aqua, so the blueness of the image can't be due to a camera issue. The colour doesn't ...
15
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1answer
3k views

Is a wavy path possible for a shooting star?

I was camping recently (May 2014), and observed several shooting stars (very fast, short lived), a few satellites (very slow, long lived) and lots of aircraft (flashing lights) in the night sky. All ...
3
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2answers
120 views

How was this interstellar fireball observed and its trajectory analyzed?

The short, interesting paper Discovery of a Meteor of Interstellar Origin describes a proposed discovery of a second interstellar object. This one hit the Earth, and was discovered not by telescope, ...
0
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1answer
93 views

Could pure iron from a star make it to Earth?

Since iron is a stars waste could a star that goes Super nova eject pure iron to travel across the galaxy? https://space.stackexchange.com/questions/35101/99-99-pure-iron-meteorite
2
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0answers
47 views

Was NASA's 2007 attempt to see helions during a solar eclipse successful? What instruments were used?

This answer about Sun-grazing comets led me eventually to Wikipedia's Helion (meteoroid), which has a one-sentence long article: A Helion meteoroid is a meteoroid that arrives from the approximate ...
5
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0answers
43 views

What percentage of a lunar meteor strike is blown back into space?

Reading a discussion on another website, it was proposed that if a large meteor struck the moon, that a few days later, Earth would receive a meteor shower. I thought about that and it seemed to me ...
7
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2answers
3k views

Did I see a mentionable event in Germany early morning on 6th of February 2019?

Around 6.15am (GMT + 1) on the 6th of February 2019 I was looking out of my window somewhat north, when I saw something one would probably call a shooting star. The features were: A magnitude I ...
7
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2answers
344 views

Was that actually a shooting star during the supermoon eclipse on September 27th 2015?

During the super-moon total lunar eclipse on September 27th a meteor-like streak passed very close within view of the event. It appeared to happen at the very middle, the maximum eclipse. [...
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2answers
105 views

What would it take to capture a passing asteroid or other celestial body into Earth's orbit?

Every once in a while, we have a celestial body that passes through our solar system. What would be needed to reel one of these in? Not crashing down to Earth, that would be bad, but say into a high ...
4
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2answers
127 views

Water Content of Space Bodies

In general, are carbonaceous chondrites (CC) or comets more water rich? I know that evidence has suggested that both CC and comets are partly composed of water, but which body is generally more water ...
3
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1answer
60 views

Will comet 21P that just passed Earth on Sept 10 produce Draconid storm on Oct 9?

Comet 21P/Giaccobini-Zinner just made its closest pass to Earth and also made its Solar perihelion on the same day (Sept 10) which is roughly one month ahead of the annual Draconids meteor shower (Oct ...
-1
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3answers
219 views

Which of the following is the correct usage: meteor / meteorite?

I hope a meteor falls on your head. or I hope a meteorite falls on your head. And why? Definition of meteor Definition of meteorite
4
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1answer
177 views

Earth's Versus Catastrophic Meteor

How evasive is the Earth to Catastrophic Meteors? Google says the Earth is approximately 92.96 million miles from the Sun. It also says the suns radius is 432,474 miles. Therefore, it is 93,392,474 ...
2
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1answer
215 views

C-Type Asteroids and Carbonaceous Chondrite Meteorites

I was just wondering, what is the relationship between C-type asteroids and carbonaceous chondrite (CC) meteorites? Do CC meteorites come from C-type asteroids?
4
votes
1answer
789 views

Why do we keep orbiting through the Perseid meteors?

I understand that the meteors originated from the the comet Swift–Tuttle. Presumably they left the comet with some velocity relative to the solar system. As comets follow elliptical orbits presumably ...
2
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1answer
105 views

Precautions when retrieving material originated from space

I'm assuming that when retrieving a meteor for study and later display, there are precautions taken against possible radiation coming from it. Is my assumption correct and are there other precautions ...
4
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1answer
88 views

Is it possible to image a meteor so the rock is visible?

I was wondering what one would see if they were to look through a telescope tracking a meteor as it shot through the sky. Technology aside, would one be able to see the object tumbling or would it ...
2
votes
1answer
63 views

Is there a database for identifying the falling light I saw?

I witnessed a light fall from the sky. It was visibly about as bright as Mars, so brighter than meteorites I've seen, was just a point of light with no tail, and traveled much much faster than an ...
5
votes
4answers
7k views

Is it possible for a virus to come from a meteorite?

So I am not a true scientist and I was just wondering if an extraterrestrial rock from space can have some dangerous unidentified virus or bacteria that can be deadly and wipe out the Earth if it not ...
3
votes
1answer
137 views

is there any mathematical formula, paper or anything that shows the probability of a meteor hitting a particular spot of moon's surface?

According to this article http://news.nationalgeographic.com/2016/02/160209-meteorite-death-india-probability-odds/ a science professor at Tulane University made a paper to calculate the probability ...
-1
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1answer
335 views

pH of meteorite [closed]

When a meteorite shower strikes a water body, what will be the pH of the water after the strike. Will it always be $<7$ or Will it always be $>7$ or Will it always be $=7$ or The answer ...
1
vote
1answer
285 views

How much time does it take for a meteor (shooting star) to touch the ground after its combustion? [closed]

I know that meteors that We see as shooting stars travel tens of thousands of kilometers per hour and are tiny as a grain of sand, but after hitting the atmosphere and burn I suppose that its ashes ...
6
votes
1answer
135 views

What explains this puzzling radio signature from a fireball?

September 21, 2017 a bright fireball over Holland was reported by hundreds of people. Several all-sky cameras recorded it as well as a special radio beacon set up to capture radio signatures of ...
2
votes
1answer
106 views

How long can afterglow last after a fireball?

I was watching the YouTube video Perseid Meteor Shower - Mojave Desert, California which looks East before sunrise, presumably in mid-August of 2016. I've made a GIF of a few seconds near the ...
2
votes
1answer
61 views

Two lights roughly 5 minutes apart about as bright as Mars or maybe Saturn

I'm in the Minneapolis/St. Paul area and around 9:30 on August 4th 2017 I saw a bright light that got dimmer moving from the tree line to the east up and to my left fairly slowly, and steadily getting ...
4
votes
1answer
167 views

Meteor shower from Moon's “debris”

Did we ever witness a "meteor shower" which was actually dust or debris of some kind from our own Moon?
3
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2answers
789 views

Why are these objects moving at Vastly Different Speeds along the same orbit?

UPDATE: The on-line simulation seems to be working beautifully now! I'd recommend anyone to go back and take another look to enjoy both the mathematical beauty of orbital mechanics, and the aesthetics ...