It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
What "all the fireballs?" What makes you think there are more meteors reaching lower levels of the atmosphere? I know that you think there has been an increase in fireball activity. I also know that you base that opinion on a site which has been collecting data for only a few years. Have you looked for a more comprehensive database yet? But where does this idea that more are making it below the mesosphere come from?
So, your reasoning doesn't explain all the fireballs making it past the mesosphere, if that's what you were attempting to do.
Again, what makes you think more objects are making it through the mesosphere?
But, these rocks are rare, specs of dust are not.
It didn't burn up. It fragmented. And it was the physics of its composition, mass, angle of entry, speed, and atmospheric density which determined where that would happen and how much energy would be released when it did.
maybe that rock would have burned up a little sooner
Originally posted by Phage
reply to post by Rezlooper
Tell me again how increased levels of methane in the upper atmosphere would allow meteors to penetrate to the lower atmosphere. Are you saying that the density of the upper atmosphere has been reduced somehow by the small amounts of methane that may reach above the mesosphere? How would that work?
That rather odd blog post about using HAARP to deal with methane shows how little methane actually exists in the troposphere (peaking at about 0.0002%). Do you think an increase on the order of several parts per billion would have much of an effect on the density of the upper atmosphere?
And I asked why you think there are more meteors passing through the mesosphere. I've pointed out to you the problem with assuming that correlation implies causation. But you haven't even established a correlation.
I'm not sure how, I am only suggesting the coincidence of these meteors (which normally burn up in the mesosphere) and methane leaking into the mesosphere.
It doesn't. I didn't say it does. So why do you think there has been an increase in the mesosphere?
Where in the HAARP article does it say the amount of methane in the mesosphere?
Where did you discover this? Large amounts? What constitutes large amounts?
I then discovered that large amounts of methane have risen to the mesosphere on a scale that we don’t even know.
WDBJ7 has gotten several reports through social media of people seeing a fireball shoot across the sky Thursday night. We have checked into the reports and found that the object, likely a meteorite, was visible from Virginia to North Carolina. Mena Hobs saw it and posted this on the WDBJ7 Facebook page. "Last night around 9:41 pm a huge ball of orange light in the sky. You could see it beyond Roanoke Electric Steel. It dropped below the horizon and appeared again briefly." More than a dozen shared their story on the American Meteor Society website. The website tracks and archives fireball reports from around the country
Meteors and fireballs are very common, and fall even during the day
The visible streak of light from space debris is the result of heat as it enters a planet's atmosphere, and the glowing particles that it sheds in its wake is called a meteor, or colloquially a "shooting star" or "falling star". Many meteors appearing seconds or minutes apart, and appearing to originate from the same fixed point in the sky, are called a meteor shower.
A 'fireball' is a brighter-than-usual meteor. The International Astronomical Union defines a fireball as "a meteor brighter than any of the planets" (magnitude −4 or greater). The International Meteor Organization (an amateur organization that studies meteors) has a more rigid definition. It defines a fireball as a meteor that would have a magnitude of −3 or brighter if seen at zenith. This definition corrects for the greater distance between an observer and a meteor near the horizon. For example, a meteor of magnitude −1 at 5 degrees above the horizon would be classified as a fireball because if the observer had been directly below the meteor it would have appeared as magnitude −6. For 2011 there are 4589 fireballs records at the American Meteor Society
Fireballs reaching magnitude −14 or brighter are called bolides. The IAU has no official definition of "bolide", and generally considers the term synonymous with "fireball". Astronomers often use "bolide" to identify an exceptionally bright fireball, particularly one that explodes (sometimes called a detonating fireball). It may also be used to mean a fireball which creates audible sounds. In the late twentieth century, bolide has also come to mean any object that hits the Earth and explodes, with no regard to its composition (asteroid or comet). The word bolide comes from the Greek βολίς (bolis) which can mean a missile or to flash. If the magnitude of a bolide reaches −17 or brighter it is known as a superbolide.
Originally posted by gemdog
Very interesting! I remember seeing a science report about a year or two ago, something about how the lower layer of atmosphere had recently become much closer to earth's surface, although at the time, scientists did not know why. Ive looked for the info since, and cant find it online.
I wonder if that is the reason meteors are getting so much closer before burning up.
Originally posted by Rezlooper
Meteors are common, fireballs are not.
Originally posted by Rezlooper
I wish we could do polls on ATS. I'd ask how many of us have actually seen a fireball, and then if you have, how many times.
Originally posted by Rezlooper
I'd bet there'd be a lot who haven't and then of those who have, it's very minimal.
Originally posted by FireballStorm
Originally posted by Rezlooper
Meteors are common, fireballs are not.
I'd say fireballs are common and meteors are even more common.
Originally posted by Rezlooper
I wish we could do polls on ATS. I'd ask how many of us have actually seen a fireball, and then if you have, how many times.
We can still do a poll - I'll start you off
This is just an estimate mind you...
Meteors: 11,000+
Fireballs: 500
Bolides: 3-4
Note: I've been observing meteor showers for 15+ years, and most meteors/fireballs I've seen occurred during either the 1998 Leonid fireball "storm" and the 2001 Leonid storm.
Take away these two events, and my stats look something like this:
Meteors: 2-3000
Fireballs: 40-50
Bolides: 1
Originally posted by Rezlooper
I'd bet there'd be a lot who haven't and then of those who have, it's very minimal.
For most people who don't generally spend much time observing the sky you'd probably be right IMO, but people who spend time observing are almost certain to have seen at least a fireball or two, and those who like me regularly observe specifically for meteors are likely to have seen many more.
Don't forget, there is a small army of amateur astronomers/meteor observers out there, many of whom have been observing the sky for decades, as well as those (both organizations and individuals) who point cameras up at the sky to monitor what is going on up there. If there was anything *that* obviously significant going on up there, these people and organizations would be the first to pick it up (followed by ATS if I'm on the ball).
It seems to me that thanks to increasing media coverage more people are starting to realize that it isn't all that hard to see meteors and fireballs, and this is something I've been trying to explain to people (with mixed success) on ATS since I first became a member in 2007. It's really only when large fireballs occur that people start paying attention in my experience.