Search found 40 matches

by alphachapmtl
Tue Mar 20, 2012 12:01 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Evolution of the Moon (2012 Mar 20)
Replies: 35
Views: 7053

Re: APOD: Evolution of the Moon (2012 Mar 20)

Presumably, the Earth was subjected to the same "heavy bombardment" as the moon. Is is generally believed that (with some notable exceptions) evidence of this bombardment has been mostly washed away by our oceans, or what? Yes, erosion and plate tectonics. Oceanic crust is constantly bein...
by alphachapmtl
Tue Mar 20, 2012 11:52 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Evolution of the Moon (2012 Mar 20)
Replies: 35
Views: 7053

Re: APOD: Evolution of the Moon (2012 Mar 20)

I wish they included the Moon's formation, and also Tycho's impact, which may be the biggest recent (108 My) impact.
by alphachapmtl
Tue Mar 13, 2012 10:11 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: American Science going down
Replies: 1
Views: 1604

American Science going down

American Science going down, American infrastructures going down. (too many wars?) A recent New York Times article: http://www.nytimes.com/2012/03/13/science/space/life-on-mars-funds-for-nasa-to-find-the-answer-fade.html?nl=todaysheadlines&emc=edit_th_20120313 "Two ambitious missions that N...
by alphachapmtl
Sat Mar 10, 2012 9:15 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Lick Observatory Moonrise (2012 Mar 10)
Replies: 22
Views: 3511

Re: APOD: Lick Observatory Moonrise (2012 Mar 10)

sagansmyhero wrote:WOA!!!
Compare this shot with the one Baldridge shot in 2008..
http://zuserver2.star.ucl.ac.uk/~idh/ap ... dridge.jpg
...
Interesting you found such a similar shot!
by alphachapmtl
Fri Mar 09, 2012 9:24 am
Forum: Open Space: Discuss Anything
Topic: 10 reasons
Replies: 516
Views: 614776

Re: 10 reasons

Some guy wrote Shakespeare's plays. I don't know who it is. It's someone I don't know, have never met, would not recognize. Whoever he is, and I don't really care, let's call him Shakespeare. Shakespeare is a great one, and still is by any other name. I'll never forget the King Lear performance I sa...
by alphachapmtl
Mon Mar 05, 2012 4:07 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Flying Over the Earth at Night (2012 Mar 05)
Replies: 92
Views: 67728

Re: APOD: Flying Over the Earth at Night (2012 Mar 05)

Am I right?
At first we see America's west coast going from north to south:
Vancouver, Seattle, Portland, San Francisco, Los Angeles, Baja California, etc...

http://i43.tinypic.com/2a660w6.png
Image
(why does this image appear so small?, the source is bigger.)
by alphachapmtl
Sat Mar 03, 2012 2:15 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Jupiter Unplugged (2012 Mar 02)
Replies: 18
Views: 4708

Re: APOD: Jupiter Unplugged (2012 Mar 02)

Thanks for the info. It was a bad curse for Galileo that it had to be launched by the Shuttle. It was not supposed to be so in the earliest design stage of the Galileo mission, but it was forced upon it at a time when the shuttle was seen as the ultimate solution to everything. I still wish for a ne...
by alphachapmtl
Fri Mar 02, 2012 5:10 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Jupiter Unplugged (2012 Mar 02)
Replies: 18
Views: 4708

Re: APOD: Jupiter Unplugged (2012 Mar 02)

I wish we had an orbiter in the Jupiter system, something like Cassini in Saturn's system.
Too bad the Galileo mission was such a failure years ago, because of an unfurled antenna who would not budge.
by alphachapmtl
Mon Feb 27, 2012 3:26 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Shocked by Supernova 1987A (2012 Feb 27)
Replies: 30
Views: 6026

Re: APOD: Shocked by Supernova 1987A (2012 Feb 27)

Is there any explanation for the "ring of pearls" effect, discrete hot centres within the ring at regular intervals? Probably unrelated, but it reminds me of the drop instability, caused by surface tension. Of course duckling instability is always a possibility. http://i39.tinypic.com/f39...
by alphachapmtl
Sun Feb 26, 2012 2:14 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Stephan's Quintet (2012 Feb 25)
Replies: 17
Views: 3932

Re: APOD: Stephan's Quintet (2012 Feb 25)

http://upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Stephans_Quintet_cutout.jpg/480px-Stephans_Quintet_cutout.jpg http://www.youtube.com/watch?v=Or-f0vSjbW4 __ 8-micrometre infrared light = red , H-alpha = green , visible red light = blue At first the galaxies at 2:08 in the movie looks differ...
by alphachapmtl
Sun Feb 26, 2012 2:05 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Stephan's Quintet (2012 Feb 25)
Replies: 17
Views: 3932

Re: APOD: Stephan's Quintet (2012 Feb 25)

Upon closer inspection of the full-size image, I'm pretty-much convinced that if you follow a path far enough from Earth through any aribitrary point in the celestial sphere, you'll eventually encounter a galaxy. Specially the further we go the more packed are the galaxies, since older universe was...
by alphachapmtl
Sun Feb 26, 2012 2:01 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Mysterious Rings of Supernova 1987A (2012 Feb 26)
Replies: 43
Views: 6615

Re: APOD: The Mysterious Rings of Supernova 1987A (2012 Feb

luigi wrote: ... It's a misterious place the LMC and it has a great view of our galaxy.
Yes, too bad we don't have a friend living there, would be nice to visit. (space is so big,,,)
by alphachapmtl
Sun Feb 26, 2012 1:58 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Mysterious Rings of Supernova 1987A (2012 Feb 26)
Replies: 43
Views: 6615

Re: APOD: The Mysterious Rings of Supernova 1987A (2012 Feb

I'm always waiting and hoping for a new supernova that would be closer.
It could be observed and studied much more precisely.
Yet years goes by and still nothing.
by alphachapmtl
Wed Feb 22, 2012 8:16 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: A Sailing Stone in Death Valley (2012 Feb 22)
Replies: 46
Views: 7646

Re: APOD: A Sailing Stone in Death Valley (2012 Feb 22)

Interesting reference here: The Sliding Rocks of Racetrack Playa, Death Valley National Park, California: Physical and Spatial Influences on Surface Processes A dissertation submitted to the Graduate Faculty in Earth and Environmental Sciences in partial fulfillment of the requirements for the degre...
by alphachapmtl
Wed Feb 22, 2012 8:06 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: A Sailing Stone in Death Valley (2012 Feb 22)
Replies: 46
Views: 7646

Re: APOD: A Sailing Stone in Death Valley (2012 Feb 22)

Strangerbarry wrote:This would have been a great picture for Geography Picture of the Day
http://photography.nationalgeographic.c ... f-the-day/
by alphachapmtl
Tue Feb 21, 2012 3:24 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Anticrepuscular Rays Over Wyoming (2012 Feb 21)
Replies: 20
Views: 3585

Re: APOD: Anticrepuscular Rays Over Wyoming (2012 Feb 21)

physicsflyer wrote:Please note that the photographer stopped driving and pulled to the side of the road to take this shot!
Maybe he was driving off the road while being busy taking the picture!
by alphachapmtl
Mon Feb 20, 2012 11:21 pm
Forum: Open Space: Discuss Anything
Topic: John Glenn Friendship 7 Day
Replies: 9
Views: 1419

Re: John Glenn Friendship 7 Day

Mercury 4 Liberty Bell 7 Lost at sea, 1961-july-21 Recovered, 1999-july-20 The Mercury capsule was flown by astronaut Gus Grissom for 15 minutes in space on July 21, 1961. Following a successful mission and splashdown, the Liberty Bell 7s hatch mysteriously blew off, causing it to take on water. Eve...
by alphachapmtl
Mon Feb 20, 2012 2:40 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Barred Spiral Galaxy NGC 1073 (2012 Feb 20)
Replies: 76
Views: 9948

Re: APOD: Barred Spiral Galaxy NGC 1073 (2012 Feb 20)

Wow! I'm impressed that the video can zoom in with such clarity something that isn't even a spec in the sky! 8-) I hate to think of Hubble ever being retired! :cry: I hate to think of Hubble ever being retired!, but I can't wait for The James Webb Space Telescope (JWST), previously known as Next Ge...
by alphachapmtl
Fri Feb 17, 2012 8:49 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: At the West Wall of Aristarchus Crater (2012 Feb 17)
Replies: 29
Views: 4211

Re: APOD: At the West Wall of Aristarchus Crater (2012 Feb 1

Pyramid shaped object (rock?) at x:1100px / y:1700px from top-left corner. The Egyptians got there first! (And what is all that fuzz? Nobody's cleaned that thing in years !) rock.jpg Rob Those seems to be 3 small craters. <a href="http://tinypic.com?ref=3wuqg" target="_blank"><i...
by alphachapmtl
Sun Apr 24, 2011 8:15 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Shadows at the Lunar South Pole (2011 Apr 23)
Replies: 15
Views: 2281

Re: APOD: Shadows at the Lunar South Pole (2011 Apr 23)

That's just slick. I'm just dreaming of a couple VLT (Very Large Telescope) observatories permanently stationed on the moon. Wow, wouldn't we be able to see something with those! -Noel Any observatory would be better in space than on any planetary surface. Of course, earth's surface has a tremendou...
by alphachapmtl
Sun Apr 24, 2011 8:08 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Cat's Eye Nebula from Hubble (2011 Apr 24)
Replies: 22
Views: 6320

Re: APOD: The Cat's Eye Nebula from Hubble (2011 Apr 24)

biddie67 wrote:Absolutely beautiful photograph - so full of mystery - just how could it be???
A turning precessing star shooting jets from it's 2 poles.