Comments on: Just in Time for Summer: The Milky Way Loses Weight http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/ Space and astronomy news Sat, 21 Nov 2009 21:17:24 -0600 http://wordpress.org/?v=2.8.6 hourly 1 By: Alphonso Richardson http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/comment-page-1/#comment-24849 Alphonso Richardson Sun, 29 Jun 2008 06:44:48 +0000 http://www.universetoday.com/?p=15139#comment-24849 Looks like they didn't include all that buggering about with dark matter. Thank goodness. Looks like they didn't include all that buggering about with dark matter.
Thank goodness.

]]> By: Al Hall http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/comment-page-1/#comment-24303 Al Hall Sun, 22 Jun 2008 22:04:13 +0000 http://www.universetoday.com/?p=15139#comment-24303 oops!... ray - Forgot to mention that dark matter (and dark energy) is theory. Not yet fact. I'm a firm believer that EVERYTHING is made of something. I don't believe in "nothing" as we perceive, at least. When we look at "empty" space, I believe it is made of "something".. and I guess that the building blocks - as we know of- are atoms-.. So, yes.. There could be trillions of cubic kilometers of space (filled with trillions and trillions of atoms) surrounding galaxies and connecting everything, thus could possibly have a gravitational effect.. But for the moment it is still theory.. I hope that we will know the answer soon. oops!…

ray –
Forgot to mention that dark matter (and dark energy) is theory. Not yet fact.
I'm a firm believer that EVERYTHING is made of something. I don't believe in "nothing" as we perceive, at least. When we look at "empty" space, I believe it is made of "something".. and I guess that the building blocks – as we know of- are atoms-.. So, yes.. There could be trillions of cubic kilometers of space (filled with trillions and trillions of atoms) surrounding galaxies and connecting everything, thus could possibly have a gravitational effect.. But for the moment it is still theory.. I hope that we will know the answer soon.

]]> By: ray http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/comment-page-1/#comment-24295 ray Sun, 22 Jun 2008 20:40:19 +0000 http://www.universetoday.com/?p=15139#comment-24295 Adérito Luís, I hope this helps. Dark matter is the matter that doesn't directly reflect or emit enough electromagnetic radiation to be visable. Only about 4 percent of the matter in the universe is seen and about 24 percent is dark matter. It includes black holes that don't allow the escape of light along with dwarf stars and planatoid objects that don't emit or reflect enough light to be seen. The rest of the universe is dark energy which is commonly confused with dark matter. It is the largest chunk of the universe at nearly three quarters of all matter. Dark matter may include neutrinos and other elementary particles like axions and WIMPs. Dark energy is much harder to define, but it seems to exist and has a gravitaional effect on other matter. Gravity may be the only way in which it reacts with matter as we know it. It produces pressure and causes gravitaional repulsion. It may or may not be homogeneous in nature and it certainly gives rise to science fiction stories. It is calculated by its effect on matter and not anything measured directly. Matter as we know it, is made of protons and electrons and defined by the number of protons in the nucleus. A proton is a proton regardless of what element it is found in but who is to say that all matter in the universe uses the same basic building blocks? Adérito Luís, I hope this helps.
Dark matter is the matter that doesn't directly reflect or emit enough electromagnetic radiation to be visable. Only about 4 percent of the matter in the universe is seen and about 24 percent is dark matter. It includes black holes that don't allow the escape of light along with dwarf stars and planatoid objects that don't emit or reflect enough light to be seen. The rest of the universe is dark energy which is commonly confused with dark matter. It is the largest chunk of the universe at nearly three quarters of all matter. Dark matter may include neutrinos and other elementary particles like axions and WIMPs. Dark energy is much harder to define, but it seems to exist and has a gravitaional effect on other matter. Gravity may be the only way in which it reacts with matter as we know it. It produces pressure and causes gravitaional repulsion. It may or may not be homogeneous in nature and it certainly gives rise to science fiction stories. It is calculated by its effect on matter and not anything measured directly. Matter as we know it, is made of protons and electrons and defined by the number of protons in the nucleus. A proton is a proton regardless of what element it is found in but who is to say that all matter in the universe uses the same basic building blocks?

]]> By: Patrick http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/comment-page-1/#comment-24201 Patrick Sat, 21 Jun 2008 17:30:39 +0000 http://www.universetoday.com/?p=15139#comment-24201 Milky Way Georgraphy -- OK - We (the Sun) is about 25,000 light years out from the center of the galaxy - Does anyone know the angle between the plane of the solar system (the ecliptic) and the plane of the Milky Way disk (the galactic plane) -- ???? Does it change with our rotation about the galactic center ? If so how does it change, and who's keeping records on this? Milky Way Georgraphy –
OK – We (the Sun) is about 25,000 light years out from the center of the galaxy -
Does anyone know the angle between the plane of the solar system (the ecliptic) and the plane of the Milky Way disk (the galactic plane) — ????
Does it change with our rotation about the galactic center ? If so how does it change, and who's keeping records on this?

]]> By: Adérito Luís http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/comment-page-1/#comment-24062 Adérito Luís Fri, 20 Jun 2008 01:09:12 +0000 http://www.universetoday.com/?p=15139#comment-24062 Hello I´m a new one and want to know the difinitio of dark-matter. Dark-matter, what´s that´s that? Hello I´m a new one and want to know the difinitio of dark-matter. Dark-matter, what´s that´s that?

]]> By: Dan http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/comment-page-1/#comment-23949 Dan Thu, 19 Jun 2008 00:13:27 +0000 http://www.universetoday.com/?p=15139#comment-23949 Isn't that interesting: Universe Today only accepts my comments when I use an invalid e-mail address but not the real one. What's going on here ... Isn't that interesting: Universe Today only accepts my comments when I use an invalid e-mail address but not the real one. What's going on here …

]]> By: Dan http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/comment-page-1/#comment-23948 Dan Thu, 19 Jun 2008 00:11:34 +0000 http://www.universetoday.com/?p=15139#comment-23948 The paper in its conclusions actually says that the new value sits smack in the middle of previous - but current - values: no "weight loss" evident here ... The paper in its conclusions actually says that the new value sits smack in the middle of previous – but current – values: no "weight loss" evident here …

]]> By: Al Hall http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/comment-page-1/#comment-23935 Al Hall Wed, 18 Jun 2008 19:43:58 +0000 http://www.universetoday.com/?p=15139#comment-23935 Well, you could just cut away some of that invisible dark matter.. :-) Well, you could just cut away some of that invisible dark matter.. :-)

]]> By: Nephish777 http://www.universetoday.com/2008/06/18/just-in-time-for-summer-the-milky-way-loses-weight/comment-page-1/#comment-23934 Nephish777 Wed, 18 Jun 2008 19:16:27 +0000 http://www.universetoday.com/?p=15139#comment-23934 Too bad I can't loose weight like that! Too bad I can't loose weight like that!

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