Noctilucent clouds

Stormymystic · 05-23-2003, 06:45 PM

Astronauts onboard the International Space Station have been observing electric blue "noctilucent" clouds from Earth-orbit. What do you think causes these above the Earth clouds?

to learn more go HERE

[ 05-23-2003, 06:50 PM: Message edited by: Stormymystic ]

Animal · 05-23-2003, 08:52 PM

A really, really, really big flashlight!

Azred · 05-23-2003, 11:29 PM

Particulate matter in the uppermost reaches of the atmosphere are bombarded by solar wind, ionized particles emitted by the Sun. This causes the particles to absorb and re-emit energy as visible light. Besides, they can also reflect light from the Sun.

These clouds happen after events like massive volcanic eruptions or near-Earth objects exploding near the ground (which throws dust into the upper atmosphere). Noctilucent clouds are why people in London saw a "blue moon" after Krakatoa erupted and why Londoners could read the newspaper at midnight after the 1908 Tunguska Blast.

Animal · 05-23-2003, 11:32 PM

Quote:

Originally posted by Azred:
Particulate matter in the uppermost reaches of the atmosphere are bombarded by solar wind, ionized particles emitted by the Sun. This causes the particles to absorb and re-emit energy as visible light. Besides, they can also reflect light from the Sun.

These clouds happen after events like massive volcanic eruptions or near-Earth objects exploding near the ground (which throws dust into the upper atmosphere). Noctilucent clouds are why people in London saw a "blue moon" after Krakatoa erupted and why Londoners could read the newspaper at midnight after the 1908 Tunguska Blast.

Smarty Pants!

TheCrimsomBlade · 05-23-2003, 11:33 PM

I had some really good mexican food last night only problem is It gave me alot of gas.
you figure it out.

[ 05-23-2003, 11:35 PM: Message edited by: TheCrimsomBlade ]

Stormymystic · 05-24-2003, 02:04 AM

rofl...ok but here is the kicker...there has not been an eruption for a while now, so why do we see them all the time?, and I see them alot here in arkansas, during the summer, so is it just earth debris, or is it crystalized space dust? or better yet.....it is aliens coming to take us away

, but the day that columbia blew up, they had reported seeing the clouds in the southern hemisphere, but they entered into the northern hemisphere, so what really happened?

Azred · 05-24-2003, 11:45 AM

Quote:

Originally posted by Animal:

quote:
Originally posted by Azred:
a brief exposition into the origin of noctilucent clouds

Smarty Pants!

[/QUOTE]One does one's humble best. [img]tongue.gif[/img] [img]graemlins/petard.gif[/img]

Quote:

Originally posted by Stormymystic:
rofl...ok but here is the kicker...there has not been an eruption for a while now, so why do we see them all the time?

The dust sent that high can stay up there for years, even decades.

05-23-2003, 06:45 PM	#1
Stormymystic Knight of the Rose Join Date: April 8, 2003 Location: Arkansas Age: 48 Posts: 4,442	Astronauts onboard the International Space Station have been observing electric blue "noctilucent" clouds from Earth-orbit. What do you think causes these above the Earth clouds? to learn more go HERE [ 05-23-2003, 06:50 PM: Message edited by: Stormymystic ] __________________ [url]\"http://stormymystic.deviantart.com/gallery/\" target=\"_blank\"> [img]\"http://img92.imageshack.us/img92/3968/stormyvx6.jpg\" alt=\" - \" /></a>

05-23-2003, 08:52 PM	#2
Animal Gold Dragon Join Date: March 29, 2002 Location: Canada Age: 51 Posts: 2,534	A really, really, really big flashlight! __________________ It\'s all fun and games until somebody loses an eye...then it becomes a sport.<br /> [img]\"http://members.shaw.ca/mtholdings/bsmeter.gif\" alt=\" - \" />

05-23-2003, 11:29 PM	#3
Azred Drow Priestess Join Date: March 13, 2001 Location: a hidden sanctorum high above the metroplex Age: 54 Posts: 4,037	Particulate matter in the uppermost reaches of the atmosphere are bombarded by solar wind, ionized particles emitted by the Sun. This causes the particles to absorb and re-emit energy as visible light. Besides, they can also reflect light from the Sun. These clouds happen after events like massive volcanic eruptions or near-Earth objects exploding near the ground (which throws dust into the upper atmosphere). Noctilucent clouds are why people in London saw a "blue moon" after Krakatoa erupted and why Londoners could read the newspaper at midnight after the 1908 Tunguska Blast. __________________ Everything may be explained by a conspiracy theory. All conspiracy theories are true. No matter how thinly you slice it, it's still bologna.

05-23-2003, 11:33 PM	#5
TheCrimsomBlade Lord Ao Join Date: August 25, 2001 Location: Winchester ,Virginia , United States Age: 71 Posts: 2,081	I had some really good mexican food last night only problem is It gave me alot of gas. you figure it out. [ 05-23-2003, 11:35 PM: Message edited by: TheCrimsomBlade ] __________________ Remember these are just games so don't get too upset when you get your ass handed to you in a hat box

05-24-2003, 02:04 AM	#6
Stormymystic Knight of the Rose Join Date: April 8, 2003 Location: Arkansas Age: 48 Posts: 4,442	rofl...ok but here is the kicker...there has not been an eruption for a while now, so why do we see them all the time?, and I see them alot here in arkansas, during the summer, so is it just earth debris, or is it crystalized space dust? or better yet.....it is aliens coming to take us away , but the day that columbia blew up, they had reported seeing the clouds in the southern hemisphere, but they entered into the northern hemisphere, so what really happened? __________________ [url]\"http://stormymystic.deviantart.com/gallery/\" target=\"_blank\"> [img]\"http://img92.imageshack.us/img92/3968/stormyvx6.jpg\" alt=\" - \" /></a>

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