Search found 11 matches

by mwhidden
Mon Sep 26, 2016 1:26 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Gaia: Here Comes the Sun (2016 Sep 26)
Replies: 30
Views: 20241

Re: APOD: Gaia: Here Comes the Sun (2016 Sep 26)

As we begin to zoom in on the solar system, there is a faint number in the background stars: 3796072587910775936
What is this number and why is it there?
by mwhidden
Wed Jul 16, 2014 2:38 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Moon Eclipses Saturn (2014 Jul 16)
Replies: 16
Views: 9581

Re: APOD: The Moon Eclipses Saturn (2014 Jul 16)

Would I be able to view the August 31st daytime occultation of Saturn from New England with a cheap ~2" refractor? I'm having a hard time understanding the chart at http://asa.usno.navy.mil/cgi-bin/occnwdo.cgi?dir=2014/occns&file=occn.2014Aug31.Saturn&body=Saturn . Does it mean the the ...
by mwhidden
Thu Jun 06, 2013 3:01 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Star Size Comparisons (2013 Jun 06)
Replies: 103
Views: 33197

Re: APOD: Star Size Comparisons (2013 Jun 06)

Planets and Sun are rotating in reverse. Either that or they're upside down :) (well, in the apod video today, they also rotate correctly, if viewed "upside down" with the south pole at the "top", where top/bottom make no sense in space anyway) I thought about that, but no, that...
by mwhidden
Thu Jun 06, 2013 1:47 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Star Size Comparisons (2013 Jun 06)
Replies: 103
Views: 33197

Re: APOD: Star Size Comparisons (2013 Jun 06)

Hugo, By definition, a Black Hole has no size. It is a point in space with no diameter at all. Perhaps a BH should be the focus of a similar size comparison video going smaller rather than larger. This video ends at the Plank length - a BH should be smaller than that! https://www.youtube.com/watch?...
by mwhidden
Tue Dec 04, 2012 3:04 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: In the Center of Saturns North Polar... (2012 Dec 04)
Replies: 29
Views: 6056

Re: APOD: In the Center of Saturns North Polar... (2012 Dec

Is it really accurate to say that the north pole "precessed" into sunlight? I would assume it came into sunlight due to the tilt of the axis and its position in orbit. Precession is a different phenomenon, isn't it?
by mwhidden
Tue Apr 24, 2012 1:39 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Rosetta Approaches Asteroid Lutetia (2012 Apr 24)
Replies: 15
Views: 4212

Re: APOD: Rosetta Approaches Asteroid Lutetia (2012 Apr 24)

Why does Lutetia appear not to be rotating (at least with respect to the sun). The shadows never shift. Were the frames compiled from images each taken at the same time of Lutetian day, or was the flyby so brief that no noticeable rotation occurred?
by mwhidden
Wed Jan 27, 2010 2:45 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Tethys Behind Titan (2010 Jan 27)
Replies: 11
Views: 3079

Re: Tethys Behind Titan (2010 Jan 27)

That's no moon... It's a space station.
by mwhidden
Thu Sep 22, 2005 4:31 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: WOW !
Replies: 9
Views: 4089

I'm not on reefer, crack, blow, etc... but I can see what he's talking about. Eg, where one would find Logan airport. Somewhat like clouds, the human mind can find any sort of pattern or resemblance in something rather random (Man in the moon (or rabbit in the moon for Korean/Japanese), hunters, hor...
by mwhidden
Tue Jul 19, 2005 5:45 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: A Nearby Supernova in M51
Replies: 22
Views: 10613

I also suspect that due to the size and brightness of the 'pseudo-nova' in the original image, that it is a foreground star (in our galaxy), and not something in M51. This make it much more susceptible to transient atmospheric effects, and rules it out as a supernova candidate.
by mwhidden
Tue Jul 19, 2005 5:42 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: visual distortion of distant galaxies
Replies: 10
Views: 5551

William Roeder wrote:If the 100.000 diameter galaxy rotates every 200.000 years, (our galaxy takes 220.000,) .
I think you meant 220,000,000 years.