Mini Comets Approaching Earth

Get a heads up on the best celestial events to observe

Mini Comets Approaching Earth

Postby gammalog » Mon Mar 27, 2006 6:00 pm

[url=http://science.nasa.gov/headlines/y2006/24mar_73p.htm]http://science.nasa.gov/headlines/y2006/24mar_73p.htm[/url]

Dave
gammalog
 
Posts: 840
Joined: Mon Feb 13, 2012 6:21 pm

RE: Mini Comets Approaching Earth

Postby big dipper » Mon Mar 27, 2006 6:33 pm

But don't worry - the closest fragment gets no nearer than 25X the Earth-Moon distance!

Had me worried for a moment there, Dave! [;)]
big dipper
 
Posts: 1418
Joined: Mon Feb 13, 2012 6:19 pm

RE: Mini Comets Approaching Earth

Postby jsc248 » Mon Mar 27, 2006 6:50 pm

Isn't it a pity we couldn't get a bit closer to the dust cloud, a good meteorite display would have been quite nice I think!
John.
To me astronomy is looking up and thinking "What the heck is going on up there!!"
jsc248
 
Posts: 3598
Joined: Wed Apr 27, 2011 7:23 pm
Location: Huyton,Merseyside

RE: Mini Comets Approaching Earth

Postby les » Mon Mar 27, 2006 9:53 pm

HI John,
The tail of comets may sometimes look spectacular but are in fact quite rarified.In May 1910 the Earth passed through the tail of Halleys comet and there was no effects whatsoever ,although there was horrified speculation among some that the atmosphere would be invaded by miasmas and toxic gasses.Luckly that was not the case though less than 8 years later influenza killed millions.Coincidence?
Regards Les.
les
 
Posts: 2729
Joined: Mon Feb 13, 2012 6:21 pm
Location: Midlothian

RE: Mini Comets Approaching Earth

Postby jsc248 » Mon Mar 27, 2006 10:10 pm

Agreed Les,
Comet tails are indeed rarified and the results may have been negligable, but it may have been fun to find out.
John.
To me astronomy is looking up and thinking "What the heck is going on up there!!"
jsc248
 
Posts: 3598
Joined: Wed Apr 27, 2011 7:23 pm
Location: Huyton,Merseyside

RE: Mini Comets Approaching Earth

Postby les » Mon Mar 27, 2006 10:43 pm

HI John,
Some observers in 1910 reported they could see a indistinct faint glow in the night sky presumably caused by sunlight striking the particals of comet dust ,but this was refuted by just as many others.I must say I am very wary of us bringing comet material back to Earth ,for all we know comets may be carriers that spread microbes and other life from one planetary system to an other.Or parhaps Im just paranoid.
Regards Les.
les
 
Posts: 2729
Joined: Mon Feb 13, 2012 6:21 pm
Location: Midlothian

RE: Mini Comets Approaching Earth

Postby pandora109 » Mon Mar 27, 2006 11:33 pm

I wouldn't worry too much Les, although it's a widely held opinion that life on earth was seeded here by and asteroid or some other heavenly body. Its helpful to remember also that this would have happened at a time when the Earths atmosphere was of a totally different composition, possibly very much thinner and less likely to excert such great temperatures on anything entering the atmosphere. Temperatures that today would destroy almost all chance of a living organism reaching the surface.

Ian
pandora109
 
Posts: 88
Joined: Mon Feb 13, 2012 6:24 pm

RE: Mini Comets Approaching Earth

Postby jsc248 » Tue Mar 28, 2006 1:43 pm

Hi Les,
I have to agre with pandora109 on this one, conditions for life now are a lot different to conditions in the past. The theory that life was seeded from elsewhere is called Panspermia and was proposed by (as well as a few others) by Sir Fred Hoyle. You should try reading one of his books on the subject, interesting but discredited by most now!
John.
To me astronomy is looking up and thinking "What the heck is going on up there!!"
jsc248
 
Posts: 3598
Joined: Wed Apr 27, 2011 7:23 pm
Location: Huyton,Merseyside

RE: Mini Comets Approaching Earth

Postby conor mcdonald » Wed Mar 29, 2006 8:50 pm

My friend observed this comet last night. It has already got a large tail and some experts say if it does break up it could reach first mag=hail bop! Fingers crossed
conor mcdonald
 
Posts: 161
Joined: Mon Feb 13, 2012 6:20 pm


Return to Astro Alerts

Who is online

Users browsing this forum: No registered users and 0 guests