Using a value of 29.53, there's a 1.47/31 chance in January, March, May, July, September, and December. There's a 0.47/30 chance in June, August, and November, and no chance in February. There's a (0.47-1/24)/(30-1/24) chance in April and a (1.47+1/24)/(31+1/24) chance in October (corrected for DST). This comes out to a probability of about.395 per year.
Judging from the fact that they rejected the corrected story I submitted, the slashdot editors are more interested in covering their own behinds than they are in true and accurate news. I'd be far more impressed if somebody 'fessed up to not properly reading the article.
A new space mission concept by the European Space Agency called Deep Interior was unveiled
The original BBC article was poorly written, but from it we learn something closer to the truth: "A proposal for the project, described here at the Committee on Space Research (Cospar) scientific assembly, was submitted to Nasa two weeks ago." It's a NASA mission, not an ESA mission.
NASA also has a similar concept called Deep Impact
Wrong. The article was comparing an ESA mission called Don Quijote to Deep Impact. Deep Interior and Deep Impact are very different. One will try to blast an enormous crater in an asteroid, and the other will passively scan an asteroid with radar.
Xentax's own example of a postulate, ""Through a point not on a line, one and only one line can be drawn parallel to the given line," describes Euclidian or parabolic geometry (flat space). Changing it allow one to think about curved spaces. From this reference:
If, however, the phrase "exists one and only one straight line which passes" is replaced by "exists no line which passes," or "exist at least two lines which pass," the postulate describes equally valid (though less intuitive) types of geometries known as elliptic and hyperbolic geometries, respectively.
Oddly enough, putting things into lower orbits also requires energy. The Mars rock weren't necessarily on their way to the sun. All we really know about them is that Earth orbit came somewhere between the rocks' perihelions and aphelions.
And also asteroids within the main belt that get to close to a resonant orbit. This phenomenon is invoked to explain how the remnants of collisions in the asteroid belt can arrive at Earth so quickly. It's better to think of the giant planets as orbit randomizers than as Hoovers.
Methane and ammonia are supplied by comet impacts. These gases are then frozen into the polar caps or into even lower latitude subsurface ice in bubbles or as hydrates. They are slowly released whenever Mars warms up. This is not the first time I've mentioned this theory.
The decomposition of magnesium hydroxide with water produces ammonia? Amazing. This must be one of those rare chemical reactions that induces a nuclear reaction: turning oxygen into nitrogen.
I dissected a cat in high school biology. I was told it came from a cat ranch in Oregon, whatever that means (an old van cruising through alleys?). It had broken its right humerus, which then mended in a bent and knotty fashion.
I have read that many interesting creatures are in deep sea where we cannot quite reach.
Humans have been at the bottom of the Marianas Trench, which is the deepest part of the ocean. Exploration of the sea is more of a political and economic problem than a technical one.
What do you suppose tilting is? Aiming or thrusting (a lance) in a joust. Hidalgo will tilt at an asteroid exactly like don Quijote tilted at windmills. They have not low but high expectations that Hidalgo will not survive the experience, much like one would expect someone tilting at a windmill to have an unpleasant experience (imagine having your lance shatter in your hands). The mission is beautifully named.
Regarding hotspots, see my post to original (not this dupe) story . All active living organisms on Earth contains liquid water within the interior of their cells. At 94 K liquid water is impossible, and it's hard to imagine life occuring in a solid phase. This leaves something truly exotic: cells filled with an organic solvent such as ethane, which is not nearly as good a solvent or catalyst as water. Such an organism seems unlikely.
water phase diagram. It shows more of the different types of ices, and the axes have scales. It is quite evident that pure water is a solid at Titan's surface (95 K, ~1.5 8 10^5 Pa) . In fact it's probably Ice Ic instead of the familiar Ice Ih.
So you're hoping that there's some magical heat source there, huh? I hate to break it to you, but that's not likely. Titan is composed of lighter elements, and so probably doesn't have much of the radioactive isotopes that have kept the Earth's interior warm for so long. Titan is much smaller than Earth and was born much further away from the Sun, so it has likely lost much of what little heat it had. Titan's revolution period is fairly well locked to the rotation period so tidal bulges will remain relatively stationary. Also, Titan is twice as far from Saturn as Europa is from Jupiter (tidal force is proportional to the inverse cube of the distance), Saturn is half the mass of Jupiter, and Saturn doesn't have any other moons anywhere as large. Thus it doesn't seem likely that there's any tidal heating going on. Feel free to post an alternative heat source. I could always use a good laugh.
For my information? I have a degree in physics. FYI, Titan's atmosphere is actually thicker than ours and the pressure is one and a half times higher. While you were at it, why didn't you mention that solutes such as salts can affect freezing and boiling points? Probably because with a 178 degree difference, pressure and solutes hardly matter.
Didn't bother to read past the first few paragraphs, eh? FYI, "The images were taken through a narrow filter centered at 938 nanometers." This is most certainly in the infrared (most folks would call it near infrared). All images of Titan's surface will have to be of the surface brightness in several infrared bands or combinations thereof (until the probe penetrates the haze).
You are also quite mistaken about the probe. The Surface Science Package is entirely devoted to studying the surface. Other Huygens instrument packages also contain devices for the study of the surface, such as a lamp for spectral study, infrared and vis imagers, and instruments for measuring the conductivity and permittivity. The gas chromatograph will be specially heated right before landing to vaporize and analyze surface material.
Your second paragraph is true, but doesn't conflict with anything I've said. I'm not certain why you included it.
Slashdot Mirror
Just wanted to point out that e9 is a radically different number than E9. e9 = 2.71828183^9 = 8,103.08393, so $8.5e9 = $68,876.21.
Using a value of 29.53, there's a 1.47/31 chance in January, March, May, July, September, and December. There's a 0.47/30 chance in June, August, and November, and no chance in February. There's a (0.47-1/24)/(30-1/24) chance in April and a (1.47+1/24)/(31+1/24) chance in October (corrected for DST). This comes out to a probability of about .395 per year.
Judging from the fact that they rejected the corrected story I submitted, the slashdot editors are more interested in covering their own behinds than they are in true and accurate news. I'd be far more impressed if somebody 'fessed up to not properly reading the article.
check this or pdf version out.
RTFA. It was a proposal to NASA. I wish /. story submitters and editors would RTFA, too.
The original BBC article was poorly written, but from it we learn something closer to the truth: "A proposal for the project, described here at the Committee on Space Research (Cospar) scientific assembly, was submitted to Nasa two weeks ago." It's a NASA mission, not an ESA mission.
NASA also has a similar concept called Deep Impact
Wrong. The article was comparing an ESA mission called Don Quijote to Deep Impact. Deep Interior and Deep Impact are very different. One will try to blast an enormous crater in an asteroid, and the other will passively scan an asteroid with radar.
The universe isn't flat, so non-Euclidean geometry is very relevant to physics.
Pisces Austrinids Jul 15-Aug 10 Jul 27
Southern delta-Aquarids Jul 12-Aug 19 Jul 27
alpha-Capricornids Jul 03-Aug 15 Jul 29
Southern iota-Aquarids Jul 25-Aug 15 Aug 04
Northern delta-Aquarids Jul 15-Aug 25 Aug 08
Perseids Jul 17-Aug 24 Aug 12
kappa-Cygnids Aug 03-Aug 25 Aug 17
Northern iota-Aquarids Aug 11-Aug 31 Aug 19
alpha-Aurigids Aug 25-Sep 08 Aug 31
This page has tips for viewing the better showers.
Oddly enough, putting things into lower orbits also requires energy. The Mars rock weren't necessarily on their way to the sun. All we really know about them is that Earth orbit came somewhere between the rocks' perihelions and aphelions.
And also asteroids within the main belt that get to close to a resonant orbit. This phenomenon is invoked to explain how the remnants of collisions in the asteroid belt can arrive at Earth so quickly. It's better to think of the giant planets as orbit randomizers than as Hoovers.
Methane and ammonia are supplied by comet impacts. These gases are then frozen into the polar caps or into even lower latitude subsurface ice in bubbles or as hydrates. They are slowly released whenever Mars warms up. This is not the first time I've mentioned this theory.
The decomposition of magnesium hydroxide with water produces ammonia? Amazing. This must be one of those rare chemical reactions that induces a nuclear reaction: turning oxygen into nitrogen.
I dissected a cat in high school biology. I was told it came from a cat ranch in Oregon, whatever that means (an old van cruising through alleys?). It had broken its right humerus, which then mended in a bent and knotty fashion.
Humans have been at the bottom of the Marianas Trench, which is the deepest part of the ocean. Exploration of the sea is more of a political and economic problem than a technical one.
Yeah, right.
whoever modded parent offtopic should be modded unfair in M2. don quixote= don quijote= name of mission mentioned in story.
What do you suppose tilting is? Aiming or thrusting (a lance) in a joust. Hidalgo will tilt at an asteroid exactly like don Quijote tilted at windmills. They have not low but high expectations that Hidalgo will not survive the experience, much like one would expect someone tilting at a windmill to have an unpleasant experience (imagine having your lance shatter in your hands). The mission is beautifully named.
Yeah, which is why I provided some convincing arguments that tidal heating is virtually non-existent on Titan. You should have read my entire post.
Regarding hotspots, see my post to original (not this dupe) story . All active living organisms on Earth contains liquid water within the interior of their cells. At 94 K liquid water is impossible, and it's hard to imagine life occuring in a solid phase. This leaves something truly exotic: cells filled with an organic solvent such as ethane, which is not nearly as good a solvent or catalyst as water. Such an organism seems unlikely.
We're discussing Titan, not Mars.
water phase diagram. It shows more of the different types of ices, and the axes have scales. It is quite evident that pure water is a solid at Titan's surface (95 K, ~1.5 8 10^5 Pa) . In fact it's probably Ice Ic instead of the familiar Ice Ih.
So you're hoping that there's some magical heat source there, huh? I hate to break it to you, but that's not likely. Titan is composed of lighter elements, and so probably doesn't have much of the radioactive isotopes that have kept the Earth's interior warm for so long. Titan is much smaller than Earth and was born much further away from the Sun, so it has likely lost much of what little heat it had. Titan's revolution period is fairly well locked to the rotation period so tidal bulges will remain relatively stationary. Also, Titan is twice as far from Saturn as Europa is from Jupiter (tidal force is proportional to the inverse cube of the distance), Saturn is half the mass of Jupiter, and Saturn doesn't have any other moons anywhere as large. Thus it doesn't seem likely that there's any tidal heating going on. Feel free to post an alternative heat source. I could always use a good laugh.
For my information? I have a degree in physics. FYI, Titan's atmosphere is actually thicker than ours and the pressure is one and a half times higher. While you were at it, why didn't you mention that solutes such as salts can affect freezing and boiling points? Probably because with a 178 degree difference, pressure and solutes hardly matter.
You are also quite mistaken about the probe. The Surface Science Package is entirely devoted to studying the surface. Other Huygens instrument packages also contain devices for the study of the surface, such as a lamp for spectral study, infrared and vis imagers, and instruments for measuring the conductivity and permittivity. The gas chromatograph will be specially heated right before landing to vaporize and analyze surface material.
Your second paragraph is true, but doesn't conflict with anything I've said. I'm not certain why you included it.