Search found 43 matches
- Fri Apr 08, 2022 4:45 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Messier 24: Sagittarius Star Cloud (2022 Apr 07)
- Replies: 11
- Views: 5539
Re: APOD: Messier 24: Sagittarius Star Cloud (2022 Apr 07)
I bet if you took a straight line from left to right through the center of this image there would be at least 10,000 stars. So if the width of the image is 300ly, that would make the stars less than 0.03 ly apart from each other. Which is only like 2 hundred billion miles between stars. And I'm sure...
- Mon May 18, 2020 11:55 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Journey into the Cosmic Reef (2020 May 18)
- Replies: 50
- Views: 21843
Re: APOD: Journey into the Cosmic Reef (2020 May 18)
The amount of energy needed to achieve the changing camera perspectives!
- Mon Feb 10, 2020 1:30 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Solar Eclipse over the UAE (2020 Feb 10)
- Replies: 12
- Views: 5617
Re: APOD: Solar Eclipse over the UAE (2020 Feb 10)
"What's happening behind that camel?" Too funny
- Wed Nov 20, 2019 1:20 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Arp 273: Battling Galaxies from Hubble (2019 Nov 20)
- Replies: 41
- Views: 10052
Re: APOD: Arp 273: Battling Galaxies from Hubble (2019 Nov 20)
Is there a supernova remnant near the bright star in the upper center of the image?
- Wed Jan 30, 2019 1:13 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Ultima Thule from New Horizons (2019 Jan 29)
- Replies: 35
- Views: 23797
Re: APOD: Ultima Thule from New Horizons (2019 Jan 29)
Artistic Rendering, "The Snowman".
- Tue Dec 11, 2018 3:16 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Arp 188 and the Tadpole's Tail (2018 Dec 11)
- Replies: 14
- Views: 5255
Re: APOD: Arp 188 and the Tadpole's Tail (2018 Dec 11)
If you click on the link, "cosmic tadpole is", it directs you to this site: http://hubblesite.org/image/1181/news_release/2002-11 I am guessing the answer to my question is probably "both" or "neither". But the image on the hubblesite.org website is mirrored in relation...
- Sat Nov 17, 2018 3:03 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Tarantula Nebula (2018 Nov 17)
- Replies: 10
- Views: 3484
Re: APOD: The Tarantula Nebula (2018 Nov 17)
You know what would be good is if we had an old picture of the Tarantula Nebula before the HST that actually looked like a tarantula. For comparison
- Thu Sep 06, 2018 1:09 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Along the Western Veil (2018 Sep 06)
- Replies: 19
- Views: 4401
Re: APOD: Along the Western Veil (2018 Sep 06)
There seems to be a lot of hydrogen and oxygen in this nebula. Is there anything that stops these elements from combining to form water?
- Sun Jul 22, 2018 8:49 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Planck Maps the Microwave Background (2018 Jul 22)
- Replies: 8
- Views: 3652
Re: APOD: Planck Maps the Microwave Background (2018 Jul 22)
They are starting to talk about it.
- Mon Jun 25, 2018 9:42 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Hayabusa2 Approaches Asteroid Ryugu (2018 Jun 25)
- Replies: 31
- Views: 13455
Re: APOD: Hayabusa2 Approaches Asteroid Ryugu (2018 Jun 25)
I think it looks like a marshmallow.
- Sat Nov 25, 2017 8:34 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Crossing Horizons (2017 Nov 25)
- Replies: 3
- Views: 3834
Re: APOD: Crossing Horizons (2017 Nov 25)
Wow! This picture almost makes me want to be an astronomer!
- Mon Aug 21, 2017 9:45 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Milky Way over Chilean Volcanoes (2017 Aug 21)
- Replies: 6
- Views: 4880
- Tue Jul 04, 2017 10:29 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Celestial Fireworks: Into Star 2... (2017 Jul 04)
- Replies: 15
- Views: 4736
Re: APOD: Celestial Fireworks: Into Star 2... (2017 Jul 04)
So in this video, we are whizzing by stars which are most likely lightyears apart. This means we're traveling at super relativistic speeds. As such, wouldn't the field of view be a little different than the artist's interpretation?
- Thu Jun 22, 2017 12:08 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Northern Summer on Titan (2017 Jun 22)
- Replies: 11
- Views: 3177
Re: APOD: Northern Summer on Titan (2017 Jun 22)
When does summer begin on the Earth's moon?
- Wed Oct 31, 2012 8:08 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Accelerating Expansion of the Universe
- Replies: 6
- Views: 6509
Re: Accelerating Expansion of the Universe
Chris Peterson wrote: At about redshift z=0.5 the acceleration is zero. At larger redshifts it is negative, and at smaller ones positive. In other words, the rate of expansion of the Universe was decreasing until about 5 billion years ago, was then constant, and has been increasing ever since. Chri...
- Thu Oct 18, 2012 12:38 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A View from Next Door (2012 Oct 18)
- Replies: 64
- Views: 16393
Re: APOD: A View from Next Door (2012 Oct 18)
Pardon the crude drawing but does the calculation of the mass of the planet take into consideration the inclination of its orbit?
- Tue Sep 11, 2012 9:10 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Halo of the Cat's Eye (2012 Aug 31)
- Replies: 14
- Views: 3624
Re: APOD: Halo of the Cat s Eye (2012 Aug 31)
It appears to be hexagonal in shape. Is there any known reason for this and could it be linked to Saturn's hexagonal south polar vortex? It has nothing to do with Saturn's hexagonal south polar vortex. It is probably some sort of extension of the inner symmetries: http://apod.nasa.gov/apod/ap110424...
- Fri Aug 31, 2012 12:42 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Halo of the Cat's Eye (2012 Aug 31)
- Replies: 14
- Views: 3624
Re: APOD: Halo of the Cat s Eye (2012 Aug 31)
It appears to be hexagonal in shape. Is there any known reason for this and could it be linked to Saturn's hexagonal south polar vortex?
- Wed Aug 01, 2012 5:08 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Milky Way Over Monument Valley (2012 Aug 01)
- Replies: 33
- Views: 11581
Re: APOD: The Milky Way Over Monument Valley (2012 Aug 01)
When you click on the "far enough" link a map of sky brightness comes up. Does anyone know what the region of sky brightness off the east coast of Argentina is? It thought the Falkland islands were sparsely populated.
- Mon Jun 04, 2012 4:54 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Milky Way Galaxy Doomed: Collision... (2012 Jun 04)
- Replies: 41
- Views: 9154
Re: APOD: Milky Way Galaxy Doomed: Collision... (2012 Jun 04
The explanation states that they will merge to form an elliptical galaxy. Considering that the two galaxies have supermassive black holes at the center of each (correct me if I'm wrong) wouldn't we end up with a state where the gravity of the black holes dominate the geometry of the system possibly ...
- Wed Apr 25, 2012 7:26 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Meteor Over Crater Lake (2012 Apr 25)
- Replies: 17
- Views: 5416
Re: APOD: Meteor Over Crater Lake (2012 Apr 25)
I'm glad you can see Denab in this picture.
- Mon Nov 28, 2011 6:09 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Caught in the Afterglow (2011 Nov 24)
- Replies: 19
- Views: 3289
Re: APOD: Caught in the Afterglow (2011 Nov 24)
Chris Peterson wrote: If anything, this data adds support to the Big Bang cosmology, since it predicts a more active early Universe. In science, "skepticism" means being open to new theories when they present themselves; it does not mean "doubt" in the usual sense. Most cosmologi...
- Sun Nov 27, 2011 12:19 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Caught in the Afterglow (2011 Nov 24)
- Replies: 19
- Views: 3289
Re: APOD: Caught in the Afterglow (2011 Nov 24)
Does this put even a slight dent in Big Bang Theory? I always wonder how much we don't understand. Given that we are born and die and many scientists come from backgrounds involving creation theories isn't there any skepticism within the scientific community that maybe the interpretation of the empi...
- Sun Nov 20, 2011 2:28 am
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Poll: Astronomy Picture of the Month for 2011 October
- Replies: 5
- Views: 7975
Re: Poll: Astronomy Picture of the Month for 2011 October
Wow! Difficult to select only 2!
- Thu Nov 10, 2011 3:23 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Time Dilation
- Replies: 1
- Views: 3293
Time Dilation
If you could travel near the speed of light, time would slow down. And as you approach the speed of light, the rate of time approaches zero. So if you could experience the world from the frame of reference of a photon wouldn't your motion across space be instantaneous?