Search found 952 matches

by Fred the Cat
Wed Mar 23, 2016 4:18 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Great Nebula in Carina (2016 Mar 23)
Replies: 19
Views: 8716

Re: APOD: The Great Nebula in Carina (2016 Mar 23)

The link to 'The Keyhole Nebula changing appearance' is showing as http://i.imgur.com/3BlMICY.jpg, which takes me to a picture of a cat! It initially showed as being to an APOD site, but immediately changed. Can you fix it, please? Thanks, Mike. Eta Carina or Car in a Eat Taco ? Palindrome was the ...
by Fred the Cat
Tue Mar 22, 2016 9:25 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Widmanstätten Pattern
Replies: 3
Views: 1480

Re: Widmanstätten Pattern

geckzilla wrote:Given your question there, you may have meant to post this in the found images thread?
Thanks Geck. For some reason I thought that section was only for images that "found" their way on to your own pad. I didn't know a stray cat could nominate another cats 'fluff". 8-)
by Fred the Cat
Tue Mar 22, 2016 8:44 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Rainbow Airglow over the Azores (2016 Mar 22)
Replies: 17
Views: 4618

Re: APOD: Rainbow Airglow over the Azores (2016 Mar 22)

It's amazing to see how many people confuse gravitational waves with atmospheric gravity waves. Not that I understand them to a high degree but I was curious if atmospheric gravity waves present themselves with destructive and constructive interference patterns after looking at today's APOD. Searchi...
by Fred the Cat
Thu Mar 17, 2016 7:30 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Close Comet and Large Magellanic Cloud (2016 Mar 17)
Replies: 13
Views: 4987

Re: APOD: Close Comet and Large Magellanic Cloud (2016 Mar 17)

...I should pick up a cheap pair of binoculars for marginal situations like this. Can anyone recommend an unserious, inexpensive pair for informal viewing? Preferably one that minimizes hand-shake (I'm not gonna use a tripod)? I've used a Nikon Action 8x40 for the last 7 years. There are certainly ...
by Fred the Cat
Thu Mar 17, 2016 5:06 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Widmanstätten Pattern
Replies: 3
Views: 1480

Widmanstätten Pattern

This amazing pattern is found in "octahedrite iron meterites and some pallasites" per Wikipedia. It's a beautiful structure from time long ago.

It might make for a fun APOD someday. :?:
by Fred the Cat
Wed Mar 16, 2016 5:20 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Mystery Feature Now Disappears in... (2016 Mar 07)
Replies: 32
Views: 5747

Re: APOD: Mystery Feature Now Disappears in... (2016 Mar 07)

Are they sure those are land masses? If they were a less dense floating solid on a liquid hydrocarbon lake and the density of the liquid was fluctuating per season wouldn't they change buoyancy? Of course then the liquid hydrocarbon might expand also and rise its surface level which wasn't detected....
by Fred the Cat
Wed Mar 09, 2016 6:54 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Edge-On Galaxy NGC 5866 (2016 Mar 09)
Replies: 14
Views: 2819

Re: APOD: Edge-On Galaxy NGC 5866 (2016 Mar 09)

starsurfer wrote:I would like to see a similar illustration of the Milky Way that shows its many tidal streams. Maybe there is one out there?
Lots out there! That's for sure :ssmile:
by Fred the Cat
Wed Mar 09, 2016 3:41 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Edge-On Galaxy NGC 5866 (2016 Mar 09)
Replies: 14
Views: 2819

Re: APOD: Edge-On Galaxy NGC 5866 (2016 Mar 09)

Guess it just takes a while to get things moving - galactically speaking? :wink:

How can we type galaxies by age – look further back in the universe?
by Fred the Cat
Mon Mar 07, 2016 6:26 pm
Forum: Open Space: Discuss Anything
Topic: Stream of Stuff
Replies: 780
Views: 386186

Re: Stream of Stuff

Click to play embedded YouTube video.
by Fred the Cat
Mon Mar 07, 2016 4:07 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Mystery Feature Now Disappears in... (2016 Mar 07)
Replies: 32
Views: 5747

Re: APOD: Mystery Feature Now Disappears in... (2016 Mar 07)

The fractal appearance of the tributaries leading into the lake is surprisingly like that of Earth's water networks. Fractals must have more in common with geometry than chemistry.

But is "fractisity" a universal feature that is related to gravity or scale?
by Fred the Cat
Fri Mar 04, 2016 5:16 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Sculptor Galaxy NGC 134 (2016 Mar 04)
Replies: 8
Views: 2639

Re: APOD: Sculptor Galaxy NGC 134 (2016 Mar 04)

In the first link to the constellation Sculptor there is an image of R Scuptoris . R Scuptoris is an interesting sight. It almost looks like it could be a planetary nebula in the early period of its formation. If it does have a companion it would surely be affecting the shedding of its outer shell. ...
by Fred the Cat
Fri Mar 04, 2016 4:38 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Moons and Jupiter (2016 Mar 03)
Replies: 14
Views: 4222

Re: APOD: Moons and Jupiter (2016 Mar 03)

Why couldn't ancients have thought that Jupiter was another star that had its own planets? Of course they rapidly shifted position but I might think that the ability to observe the moons of Jupiter without aide may have given insight into planetary arrangement very long before Galileo used his teles...
by Fred the Cat
Mon Feb 29, 2016 4:15 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: IC 1848: The Soul Nebula (2016 Feb 28)
Replies: 11
Views: 3334

Re: APOD: IC 1848: The Soul Nebula (2016 Feb 28)

I've always pictured Cassiopeia as a woman sitting reclined knees bent head back.
Cassiopeia Reclined.jpg
To me it seems very obvious but I suspect others see it differently. :ssmile:
by Fred the Cat
Fri Feb 26, 2016 9:16 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Tarantula Nebula (2016 Feb 26)
Replies: 20
Views: 6373

Re: APOD: The Tarantula Nebula (2016 Feb 26)

I'm curious about the interesting bright object in the upper left of today's image. It seems disconnected from the Tarantula nebula, unlike the various filaments, etc., elsewhere in the image. This is probably just a matter of perception because of it's unique appearance. http://apod.nasa.gov/apod/...
by Fred the Cat
Fri Feb 26, 2016 8:04 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Tarantula Nebula (2016 Feb 26)
Replies: 20
Views: 6373

Re: APOD: The Tarantula Nebula (2016 Feb 26)

neufer wrote:After a kill, some ant-mimicking spiders hold their victims between themselves and large groups of ants to avoid being attacked

Now I know where Hollywood gets its material.
Click to play embedded YouTube video.
by Fred the Cat
Fri Feb 26, 2016 3:52 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Tarantula Nebula (2016 Feb 26)
Replies: 20
Views: 6373

Re: APOD: The Tarantula Nebula (2016 Feb 26)

While the Tarantula Nebula got its name for resembling the legs of the spider I think it’s the face that stars.
by Fred the Cat
Thu Feb 25, 2016 5:33 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Highest, Tallest, and Closest to the... (2016 Feb 25)
Replies: 26
Views: 15411

Re: APOD: Highest, Tallest, and Closest to the... (2016 Feb 25)

The acceleration of gravity isn't determined only by the distance from Earth's center, but by the local density of the crust. As a result, Huascarán Peak in Ecuador, which is slightly closer to Earth's center than Chimborazo, actually has the smallest acceleration of gravity on Earth, 9.7639 m/s 2 ...
by Fred the Cat
Wed Feb 24, 2016 9:04 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: USA's Northeast Megalopolis from Space (2016 Feb 24)
Replies: 17
Views: 6112

Re: APOD: USA's Northeast Megalopolis from Space (2016 Feb 24)

If you think of the crew living in a hula hoop 50 feet in diameter circle the Earth 250 miles above Earth's surface (being about 4000 miles from its center) then using 4250 miles as a major radius and 50 ft (0.01 miles) as minor radius the volume of the area http://www.aqua-calc.com/calculate/volume...
by Fred the Cat
Wed Feb 24, 2016 8:15 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Back to the Bang
Replies: 12
Views: 16826

Re: Back to the Bang

I always thought it would be really mean to take apart the cube then put it together with one corner turned, then mix it up and hand it to a genius quick solver, sit back, and enjoy As many really smart people as our world has produced - it makes one think "God" beat us to the punch. :win...
by Fred the Cat
Wed Feb 24, 2016 5:46 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: USA's Northeast Megalopolis from Space (2016 Feb 24)
Replies: 17
Views: 6112

Re: APOD: USA's Northeast Megalopolis from Space (2016 Feb 24)

I'm not sure which is more crowded – the space station or the Eastern Seaboard? Ratioing the number of people in the ISS following a corridor all the way around the Earth in one orbit to the number of people in the Northeast Corridor might be a good math problem. :idea: I might bet on the ISS for ro...
by Fred the Cat
Mon Feb 22, 2016 8:39 pm
Forum: Open Space: Discuss Anything
Topic: It's a Hoot
Replies: 2
Views: 1162

Re: It's a Hoot

What happens when an owl invades a retirement community?
Poo, poo
Really - it does. :cry:
by Fred the Cat
Mon Feb 22, 2016 8:19 pm
Forum: Open Space: Discuss Anything
Topic: It's a Hoot
Replies: 2
Views: 1162

It's a Hoot

You all need a place for funny Owls to roost... those prime for a laugh. :)
by Fred the Cat
Mon Feb 22, 2016 8:13 pm
Forum: Open Space: Discuss Anything
Topic: Forum Statistic - What's the odds?
Replies: 149
Views: 27075

Re: Forum Statistic - What's the odds?

owlice wrote:Coming soon to Total topics, a pair of primes, 15971 and 15973.
O¥O Hoo, hoo were the lucky posters?