Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Space Weather: Explosions on Venus
NASA ^ | March 5, 2012 | unattributed javascript fan

Posted on 03/18/2012 7:54:56 AM PDT by SunkenCiv

Earth has a magnetic field and Venus does not -- a crucial distinction when assessing the effects of the sun on each planet.

As the solar wind rushes outward from the sun at nearly a million miles per hour, it is stopped about 44,000 miles away from Earth when it collides with the giant magnetic envelope that surrounds the planet called the magnetosphere. Most of the solar wind flows around the magnetosphere, but in certain circumstances it can enter the magnetosphere to create a variety of dynamic space weather effects on Earth. Venus has no such protective shield, but it is still an immovable rock surrounded by an atmosphere that disrupts and interacts with the solar wind, causing interesting space weather effects.

A recent study, appearing online in the Journal of Geophysical Research on February 29, 2012, has found clear evidence on Venus for a type of space weather outburst quite common at Earth, called a hot flow anomaly. These anomalies, also known as HFAs, cause a temporary reversal of the solar wind that normally moves past a planet. An HFA surge causes the material to flood backward, says David Sibeck, a scientist at NASA's Goddard Space Flight Center in Greenbelt, Md., who studies HFAs at Earth and is a co-author on the paper.

(Excerpt) Read more at nasa.gov ...


TOPICS: Astronomy; Science
KEYWORDS: catastrophism; climate; hotflowanomaly; magnetism; solarwind; venus; xplanets
When discontinuities in the solar wind remain in contact with a planet's bow shock, they can collect a pool of hot particles that becomes a hot flow anomaly (HFA). An HFA on Venus most likely acts like a vacuum, pulling up parts of the planet’s atmosphere. Credit: NASA/Collinson

Space Weather: Explosions on Venus

1 posted on 03/18/2012 7:55:04 AM PDT by SunkenCiv
[ Post Reply | Private Reply | View Replies]

To: Ernest_at_the_Beach; Rurudyne; steelyourfaith; Tolerance Sucks Rocks; xcamel

Maybe a climate ping, dunno.


2 posted on 03/18/2012 7:56:23 AM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
[ Post Reply | Private Reply | View Replies]

To: KevinDavis; annie laurie; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; Mmogamer; ...

Something that may be detectable in extrasolar contexts? Someday?

 
X-Planets
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
Google news searches: exoplanet · exosolar · extrasolar ·

3 posted on 03/18/2012 7:57:24 AM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
[ Post Reply | Private Reply | View Replies]

To: 75thOVI; agrace; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; ...



4 posted on 03/18/2012 7:57:31 AM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
[ Post Reply | Private Reply | View Replies]

To: NicknamedBob

I assume you have this contingency covered ...


5 posted on 03/18/2012 7:58:45 AM PDT by Tax-chick (I'm trying to avoid sarcasm, but darn it, life is absurd!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv

Good thing there was an extra day in February this year.


6 posted on 03/18/2012 8:09:48 AM PDT by ILS21R (I know you know I know)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv
Why isn't the solar wind coming from the same direction as the sunlight?!

ML/NJ

7 posted on 03/18/2012 8:28:27 AM PDT by ml/nj
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv

8 posted on 03/18/2012 8:38:49 AM PDT by JoeProBono (A closed mouth gathers no feet - Mater tua caligas gerit ;-{)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv

Moderator! Moderator! SunkenCiv is posting dirty space pictures again!


9 posted on 03/18/2012 8:51:49 AM PDT by blueunicorn6 ("A crack shot and a good dancer")
[ Post Reply | Private Reply | To 1 | View Replies]

To: Tax-chick; SunkenCiv
"I assume you have this contingency covered ..."

Wow! That's rather evocative.

And here I've been thinking of Venus as feminine.

Anyway, I suspect this doesn't do very much to the conditions at fifty kilometers altitude, where the settlements will be. (Cloud-cities, if you will. R Buckminster Fuller will be so proud.)

10 posted on 03/18/2012 9:03:16 AM PDT by NicknamedBob (If "everybody's different" then two of them have to be the same. It's the only way to be different.)
[ Post Reply | Private Reply | To 5 | View Replies]

To: SunkenCiv
Not to be too much of a stickler and I know you didn't generate the graphic but shouldn't the lit side of Venus be facing the solar wind instead of being 90° off?

Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)

LonePalm, le Républicain du verre cassé (The Broken Glass Republican)

11 posted on 03/18/2012 9:14:43 AM PDT by LonePalm (Commander and Chef)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv; Tax-chick
"Maybe a climate ping, dunno."

.

Climate on Earth depends on latitude.

Climate on Venus depends on altitude.

.

Behold the power of transposed letters!

12 posted on 03/18/2012 9:28:32 AM PDT by NicknamedBob (If "everybody's different" then two of them have to be the same. It's the only way to be different.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: NicknamedBob
Climate on Earth depends on latitude.

Climate on Venus depends on altitude.

Climate on FR depends on attitude.

13 posted on 03/18/2012 10:20:11 AM PDT by wittyone (Cogito cogito, ergo cogito sum.)
[ Post Reply | Private Reply | To 12 | View Replies]

To: wittyone; Tax-chick
Sometimes attitude depends on altitude.
14 posted on 03/18/2012 10:28:39 AM PDT by NicknamedBob (If "everybody's different" then two of them have to be the same. It's the only way to be different.)
[ Post Reply | Private Reply | To 13 | View Replies]

To: NicknamedBob

Cute poem. Stock rotation indeed...


15 posted on 03/18/2012 11:49:00 AM PDT by wittyone (Cogito cogito, ergo cogito sum.)
[ Post Reply | Private Reply | To 14 | View Replies]

To: ml/nj; LonePalm

The pic should be of Venus’ pole (either one), but clearly they weren’t too worried about it. :’)


16 posted on 03/18/2012 12:08:31 PM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
[ Post Reply | Private Reply | To 7 | View Replies]

To: NicknamedBob; wittyone

;’)


17 posted on 03/18/2012 12:08:47 PM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
[ Post Reply | Private Reply | To 12 | View Replies]

To: blueunicorn6

All I have to do is whisper “hot flow anomaly” and the girls swoon.


18 posted on 03/18/2012 12:09:44 PM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
[ Post Reply | Private Reply | To 9 | View Replies]

To: JoeProBono

Now, *that’s* bow shock.


19 posted on 03/18/2012 12:10:11 PM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
[ Post Reply | Private Reply | To 8 | View Replies]

To: SunkenCiv
The pic should be of Venus’ pole (either one), but clearly they weren’t too worried about it.

Our government at work!

People here who think NASA is any different from any other agency of incompetents should pay attention.

ML/NJ

20 posted on 03/18/2012 1:03:21 PM PDT by ml/nj
[ Post Reply | Private Reply | To 16 | View Replies]

To: SunkenCiv; blueunicorn6; wittyone
"All I have to do is whisper “hot flow anomaly” and the girls swoon."

Indeed.

"Since the HFA causes material to flow sunward, away from the planet, it may operate almost like a vacuum cleaner, pulling that bow shock further away from Venus. The size of the ionosphere would swell in concert."

"Is that an HFA in your pocket, or are you just happy to see me?" -- Solar Wind to Planet Venus

21 posted on 03/18/2012 1:08:10 PM PDT by NicknamedBob (If "everybody's different" then two of them have to be the same. It's the only way to be different.)
[ Post Reply | Private Reply | To 18 | View Replies]

To: SunkenCiv

This just seen on the Twitter feed:
“Professor Morse of McGill University reports observing a total of three explosions on the planet Mars, between the hours of 7:45 P. M. and 9:20 P. M., eastern standard time. This confirms earlier reports received from American observatories. Now, nearer home, comes a special announcement from Trenton, New Jersey. It is reported that at 8:50 P. M. a huge, flaming object, believed to be a meteorite, fell on a farm in the neighborhood of Grovers Mill, New Jersey, twenty-two miles from Trenton. “


22 posted on 03/18/2012 1:14:40 PM PDT by Cvengr (Adversity in life and death is inevitable. Thru faith in Christ, stress is optional.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Cvengr

IIRC, these are the opening lines for the famous 1938 Orson Welles radio play based on the H.G. Wells novel “War of the Worlds.”


23 posted on 03/18/2012 1:33:44 PM PDT by Captain Rhino (Determined Effort is the hammer that Human Will uses to forge Tomorrow on the anvil of Today.)
[ Post Reply | Private Reply | To 22 | View Replies]

To: Captain Rhino

Yes. The transit time from Mars is too short to be realistic.


24 posted on 03/18/2012 1:45:24 PM PDT by NicknamedBob (If "everybody's different" then two of them have to be the same. It's the only way to be different.)
[ Post Reply | Private Reply | To 23 | View Replies]

To: SunkenCiv

I tried it with Mrs. blueunicorn6. I swooned when she hit me with a frying pan.


25 posted on 03/18/2012 3:33:06 PM PDT by blueunicorn6 ("A crack shot and a good dancer")
[ Post Reply | Private Reply | To 18 | View Replies]

To: blueunicorn6

Apropos of nothing, I loved the frying pan scene in “Throw Momma from the Train”. ;’)


26 posted on 03/18/2012 9:05:04 PM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
[ Post Reply | Private Reply | To 25 | View Replies]

To: NicknamedBob; Captain Rhino; Cvengr

That was the problem with the broadcast. Didn’t seem to bother those who fell for it. I mean, really, I’ve got it on record (LP) around here somewhere, and there’s the “we return you to our program of dance music” breaks that last a short time, then the dead soldiers have been moved from the encounter site to a hospital and autopsied, and they’d died of burns or whatever (for example). Some of the radio stations used to rebroadcast that on Halloweens when I was a kid, and it was a curiousity item at best, but people here and there around the country continued to have that hysterical reaction every once in a while.


27 posted on 03/18/2012 9:09:12 PM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
[ Post Reply | Private Reply | To 24 | View Replies]

To: JoeProBono; SunkenCiv; blam; All

Here is another astronomical link with beautiful picture. SC - Perhaps worthy of its own separate post?

http://www.huffingtonpost.com/2012/03/16/neil-degrasse-tyson_n_1354898.html?ncid=webmail17


28 posted on 03/20/2012 10:19:07 PM PDT by gleeaikin
[ Post Reply | Private Reply | To 8 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson